Abhishek Mishra asked a question

Subject: Math, asked on on 8/4/18

29. In the adjoining figure, ABCD is a rectangle. Its diagonal AC = 15 cm and

∠

ACD =

α

. If cot

α = \frac{3}{2}

, find the perimeter and area of the rectangle.

30. Using the measurements given in figure alongside,
(a) find the values of :
(1) sin

ϕ

(ii) tan

θ

.
(b) write an expression for AD in terms of

θ

.
Hint: (b) CD = 5. Draw DE perpendicular to AB, BE = 5, EA = 9.

Rajarshi Samanta asked a question

Subject: Math, asked on 6 days, 6 hours ago

If ? = 30?, then find the value of

Lalitha Shree asked a question

Subject: Math, asked on on 16/12/17

in the following figure ,ab=4 cm and ed=3cm and sin x = 3/5 and cos y =12/13 find the length of bd
Q.37. In the following figure, AB = 4 cm and ED = 3 m.

If

\sin α = \frac{3}{5} a n d \cos β = \frac{12}{13}

find the length of BD.

Koninika Sen Athalye asked a question

Subject: Math, asked on on 16/12/18

If 12sin theta = 35cos theta, find the value of (sin theta - cos theta)/(sin theta + cos theta)

Akbar Khan asked a question

Subject: Math, asked on on 13/8/17

11 question pls

Gargi Mishra asked a question

Subject: Math, asked on on 21/3/20

In a right angled triangle ABC, right angled B, if cot A=1, prove that 2 sin A cos A=1.

Please answer step by step

Akash Das Gupta asked a question

Subject: Math, asked on on 5/5/18

(xxi) If 2y cos

θ

= xsin

θ

and 2x sec

θ

- y cosec

θ

= 3, then what is the value of x² + 4y²?
(a) 2 (b) 1 (c) 0 (d) None of these.
(xxii) If tan

θ

+ cot

θ

= 2, then the value of tan

θ

- cot

θ

is
(a) 1 (b) 2 (c) - 1 (d) None of these.
(xxiii) If 3 cos

θ

- 4 sin

θ

= 5, then the value of 3 sin

θ

+ 4 cos

θ

is
(a) 1 (b) 2 (c) 0 (d) None of these.

Aditi Patwal asked a question

Subject: Math, asked on on 2/10/20

If 5 tan theta = 4 , find the value of( 5sin theta -3cos theta )/ (5 sin theta+2cos theta)

Vamsee Yashwanth asked a question

Subject: Math, asked on on 27/12/18

Can anyone solve this question

In a triangle ABC
Angle b = 90 degrees
Sin a = 8/11

Show that
1.sec squareA-tan square A = 1
2.cot square A-cosec square A+1 = 0

Dhruv Rajgaria asked a question

Subject: Math, asked on on 14/9/18

In the figure(2) given below,triangle ABC is right angled at B and BD is perpendicular to AC.Find
i) cos angle CBD
ii) cot angle ABD

Aditi Patwal asked a question

Subject: Math, asked on on 2/10/20

in the adjoining figure triangle ABC is right angled at B ,D is midpoint of BC , AC = 5 units , BC = 4 units and angle BAD = theta find the values of- 1) tan theta , 2) sin theta , 3) sin? theta + cos? theta

Artha Potdar asked a question

Subject: Math, asked on on 12/3/18

Prove that: Tan20tan30tan40tan80=1

Sanidhya Mishra asked a question

Subject: Math, asked on on 3/2/20

4tan60?sec30?+sin 31?sec 59?+cot 59?cot 31?
????????????????
8 sin^2 30?- tan^2 45?
Experts please answer it urgent.

Debargha Das asked a question

Subject: Math, asked on on 21/7/18

value of tan 12 degree 20 minute

Sumedha Ghosh Chowdhury asked a question

Subject: Math, asked on on 2/10/18

In the given figure , angle B = 60 ^o , AB = 8 cm and BC = 25 cm . Calculate i) BE ii) AC

Khushboo asked a question

Subject: Math, asked on on 15/2/18

sin 60 degree / cos^2 45 degree - 3 tan 30 degree + 5 cos 90 degree

Anwesha Ghosh asked a question

Subject: Math, asked on on 8/1/18

sin square 28 degrees minus cos square 62 degrees is equal two 0 prove it

Jayanth asked a question

Subject: Math, asked on on 29/7/18

if tan theta + cot theta equals to 2 then sin theta equals to

Kritika Dudpuri asked a question

Subject: Math, asked on on 27/11/18

( sin 29 ° 31') ÷ (cos 60° 29')

Akbar Khan asked a question

Subject: Math, asked on on 13/8/17

Q12 pls

Ekta Arora asked a question

Subject: Math, asked on on 19/10/20

Find the angle A ,if sin60sec(90-3A)=1

Abhishek Singh asked a question

Subject: Math, asked on on 28/10/18

If sin (x-2y) = cos (4y-x), then the value of cot 2y is:

Aditya Prashant Verat asked a question

Subject: Math, asked on on 7/12/19

Questions v & vi

Sanjani asked a question

Subject: Math, asked on on 10/9/18

if the length of each side of a rhombus is 8 cm and its one angle is 60 degree,then find the lengths of the diagonals of the rhombus

Ashmit Sah asked a question

Subject: Math, asked on on 25/5/20

Prove that please

Jayanth asked a question

Subject: Math, asked on on 30/7/18

If cot theta + cosec theta equals to 5 then cos theta equals to

Ekta Arora asked a question

Subject: Math, asked on on 7/10/20

In a triangle PQR ,PQ=QR PS is perpendicular to side QR and RT is perpendicular to side PQ .Prove that PS =RT

Ashadip Ghosh asked a question

Subject: Math, asked on on 4/8/17

Q n 15

Vasudha V. Chaskar asked a question

Subject: Math, asked on 4 weeks, 2 days ago

I need answer

Savikaran asked a question

Subject: Math, asked on on 7/7/19

Solve question 13 plz

Garima Singh asked a question

Subject: Math, asked on on 13/9/17

Solve this:
7. Find AB.

Purnima Kumari asked a question

Subject: Math, asked on on 24/12/19

Pls solve no 24

Niharika asked a question

Subject: Math, asked on on 15/2/20

Can someone pla help me ??

Khushi Pal asked a question

Subject: Math, asked on on 11/10/20

I want to get the solution for this

Raju asked a question

Subject: Math, asked on on 20/7/18

If 1+sinx = 9cosx then 5(1-cosx)=

Anumita Dutta asked a question

Subject: Math, asked on on 28/2/18

Prove that

\frac{\sin (90 ° - A)}{1 - \tan A} + \frac{\sin A}{1 - \tan (90 ° - A)} = \cos A + \cos (90 ° - A)

.

Aditya asked a question

Subject: Math, asked on on 10/9/17

Plz do thi

Praveen Chandra Yadav asked a question

Subject: Math, asked on on 31/12/18

Q7 iv part experts give solution

Akbar Ali Agwan asked a question

Subject: Math, asked on on 25/4/18

Please solve 8c(i,ii)

Anindita Sarkar asked a question

Subject: Math, asked on on 26/9/19

Please solve question no.18.

Saksham Mahato asked a question

Subject: Math, asked on on 19/9/17

Q11. If 13 sin = 5, find the value of

\frac{(5 \sin θ - 2 \cos θ)}{\tan θ}

Q12. If

c o t θ = \frac{1}{\sqrt{3}}, s h o w t h a t (\frac{1 - \cos^{2} θ}{2 - \sin^{2} θ}) = \frac{3}{5}

Q13. If

s e c θ = \frac{13}{5}, s h o w t h a t (\frac{2 \sin θ - 3 \cos θ}{4 \sin θ - 9 \cos θ}) = 3 .

Q14. If

3 \tan θ = 4, s h o w t h a t (\frac{3 \sin θ + 2 \cos θ}{3 \sin θ - 2 \cos θ}) = 3 .

Anindita Sarkar asked a question

Subject: Math, asked on on 3/1/20

Please solve question no.6.

Sraboni Chakraborty asked a question

Subject: Math, asked on on 29/6/19

Without using trigonometrical tables evaluate: (tan 30?/tan 60?)*2 -2(sin 30?/cos 60?)*2

Priyanshu Sahu asked a question

Subject: Math, asked on on 17/2/20

Pls solve this

Ravi Munda asked a question

Subject: Math, asked on on 21/5/18

If SinQ =3/5 and Q is an acute angle Find : (1) CosQ ,(2) tanQ

Khushi Pal asked a question

Subject: Math, asked on on 11/10/20

I need help with this question

Anwesha Ghosh asked a question

Subject: Math, asked on on 8/1/18

12,13,14,15all the sub parts

Q12. Without using trigonometrical tables, evaluate :

(i)

2 {(\frac{\tan 35 °}{\cot 55 °})}^{2} + (\frac{\cot 55 °}{\tan 35 °}) - 3 (\frac{\sec 40 °}{cosec 50 °})

(ii)

\frac{\sin 35 ° \cos 55 ° + \cos 35 ° \sin 55 °}{{cosec}^{2} 10 ° - \tan^{2} 80 °}

(iii) sin²34° + sin²56° + 2 tan 18° tan 72° – cot² 30°.

Q13. Prove the following :

(i)

\frac{\cos θ}{\sin (90 ° - θ)} + \frac{\sin θ}{\cos (90 ° - θ)} = 2

(ii) cos

θ \sin (90 ° - θ) + \sin θ \cos (90 ° - θ) = 1

(iii)

\frac{\tan θ}{\tan (90 ° - θ)} + \frac{\sin (90 ° - θ)}{\cos θ} = \sec^{2} θ

.

Q14. Prove the following :

(i)

\frac{\cos (90 ° - A) \sin (90 ° - A)}{\tan (90 ° - A)} = 1 - \cos^{2} A

(ii)

\frac{\sin (90 ° - A)}{cosec (90 ° - A)} + \frac{\cos (90 ° - A)}{\sec (90 ° - A)} = 1

Q15. Simplify the following :

(i)

\frac{\cos θ}{\sin (90 ° - 0)} + \frac{\cos (90 ° - θ)}{\sec (90 ° - θ)} - 3 \tan^{2} 30 °

Divyanshi Rana asked a question

Subject: Math, asked on on 20/10/18

Pls do this question fast.

Priyanka Das asked a question

Subject: Math, asked on on 8/12/18

15x=?,prove that cos x cos 2x cos 3x cos 4x cos 5x cos6x cos7x=1/2^7

Kritika Dudpuri asked a question

Subject: Math, asked on on 25/2/19

A bridge across a river makes an angle of 45º with the river bank. If the length of the bridge across the river is 200 m. Find the breadth of the bridge.

Wekshitha Alapati asked a question

Subject: Math, asked on on 27/9/17

If tan theta equal to 1 by root 7 then cosecant square theta minus secant square theta by co secant square theta + secant square theta equals to

Anindita Sarkar asked a question

Subject: Math, asked on on 26/9/19

Please solve question no.21.

Rajat asked a question

Subject: Math, asked on on 12/10/17

1. If sec A = cosec A and

0 \leq A \leq 90

, state the value of A.
2. If tan

θ

= cot

θ

and

0 \leq θ \leq 90

, State the value of

θ

.
3. If sin x = cos y; write the relation between x and y, if both the angles x and y are acute.

Vrishti Rajput asked a question

Subject: Math, asked on on 7/1/20

Please solve the following question no 26

Akbar Ali Agwan asked a question

Subject: Math, asked on on 25/4/18

Please solve 8c(i):

8 (c) In the figure (3) given below, AD is perpendicular to BC, BD=15 cm, sin B=

\frac{4}{5}

and tan C=1
(i) Calculate the lengths of AD, AB, DC and AC.

Khushi Pal asked a question

Subject: Math, asked on on 11/10/20

Please help me with this question's solution

Jayanti Goswami asked a question

Subject: Math, asked on on 9/10/17

Could someone help me solve these?

1. (Cos 13 + sin 13)/ (cos 13 - sin 13) = tan A
What is A?

2. (sin 20 cos 70 + cos 20 sin 70)/ (sin 23 cosec 23 + cos 23 sec 23)= ?

3. If tan a = 5/6 and tan b = 1/11, then what is the value of a + b ?

Sarah Kohli asked a question

Subject: Math, asked on on 15/1/20

Two poles of the same height stand opposite to each other on either sides of a road of width 20 m. From a point on the road, the angles of elevation of the top of the poles are 45??and 60??respectively.??

Ravi Prakash asked a question

Subject: Math, asked on on 19/2/20

sin30

Ankita Kundu asked a question

Subject: Math, asked on on 5/10/20

Can u pls do this sum?

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Subject: Math, asked on on 30/7/18

if sec theta - tan theta equals to 4 by 3 then sin theta equals to

Khushi Pal asked a question

Subject: Math, asked on on 11/10/20

I want to get the solution for this

Kritika Dudpuri asked a question

Subject: Math, asked on on 27/11/18

[ ( sin 28 °54')÷(sec 61° 6') ] + [ ( cos 28° 54' ) ÷ cosec 61° 6']

Sarah Kohli asked a question

Subject: Math, asked on on 15/1/20

Dear experts ,
Please solve the following

Suraj Shekhar Sahu asked a question

Subject: Math, asked on on 14/3/18

In the figure, triangle ABC is right angled at B and BD is perpendicular to AC. Find cos angle CBD and cos angle ABD

Ankita Kundu asked a question

Subject: Math, asked on on 31/3/20

Pls solve the sum no.19

Harshini asked a question

Subject: Math, asked on on 26/1/18

In triangle ABC, ∠B = 90°, AB = 40, AC + BC = 80. Find :
(i) sin A (ii) cos A (iii) tan C

Ankita Kundu asked a question

Subject: Math, asked on on 5/10/20

Pls prove sum no. ii

Rudranshu asked a question

Subject: Math, asked on on 20/11/17

sin 59 + tan 63°

Khushi Pal asked a question

Subject: Math, asked on on 11/10/20

I need help with this question

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Subject: Math, asked on on 7/9/17

Valueof x in degree

Vihan Himjal asked a question

Subject: Math, asked on on 9/1/18

Q). Evaluate the following pls

s e c 70 ° \sin 20 ° + \cos 20 ° \cos e c 70 °

Ridhima asked a question

Subject: Math, asked on on 6/9/17

If x=a cos theeta + a sin theeta; y=a sin theeta - b cos theeta, prove that x² + y² = a² + b²

Kritika Dudpuri asked a question

Subject: Math, asked on on 27/11/18

Express in terms of trigonometric ratios of angles between 0 ° and 45°
cos 81° + cot 81°

Yuvraj Kumar Sah asked a question

Subject: Math, asked on on 9/3/20

please please please help solve it fast

Sarvagya Singh asked a question

Subject: Math, asked on on 29/11/19

Please answer
Prove:-
tan20?.tan35?.tan55?.tan70?=1

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Subject: Math, asked on on 30/11/18

Q 3 (i) and (ii)

Sarah Kohli asked a question

Subject: Math, asked on on 15/1/20

Dear experts ,
Please answer the following

Vani Mehndiratta asked a question

Subject: Math, asked on on 2/5/20

Pls solve example 11

Sambit Mallick asked a question

Subject: Math, asked on on 7/6/18

prove that (1+cos A)/sin²A=1/(1-cos A)

Ankita Kundu asked a question

Subject: Math, asked on on 5/10/20

Can u pls prove sum no. iii

Akbar Ali Agwan asked a question

Subject: Math, asked on on 25/4/18

Please solve 8c(ii)

Shivangi Joshi asked a question

Subject: Math, asked on on 29/6/19

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Subject: Math, asked on on 23/7/18

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Utkarsh Vats asked a question

Subject: Math, asked on on 30/11/19

Question no. 114

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Subject: Math, asked on on 20/9/17

Pls. Solve Qn.No. 14

Naveen Singh asked a question

Subject: Math, asked on on 27/1/20

Ans it plz .

Deepak asked a question

Subject: Math, asked on on 16/11/17

how
Example.1. If a = cos 2 and b = sin 7, then
(a) a > 0, b > 0
(b) ab < 0
(c) a > b
(d) a < b

Almighty123404 asked a question

Subject: Math, asked on on 22/5/20

Please answer my question

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Subject: Math, asked on on 24/6/18

Meritnation expert I have my exam so it's very urgent.....so please help me with this question no. 17

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If all the three altitudes of a triangle are equql ,the triangle is equilateral

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Subject: Math, asked on on 30/7/18

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Subject: Math, asked on on 19/10/20

The perimeter of rhombus is 48cm and the obtuse angle of it is 120 find the length of its diagonals

Saakshi Gudgud asked a question

Subject: Math, asked on on 24/6/18

If x = a cos theta + b sin theta and y = a sin theta - b cos theta prove that x square + y square = a square + b square

EVALUATE THE FOLLOWING EXPRESSION WITHOUT USING TRIGONOMETRIC TABLES- cot 30/ sec 30 + cosec 30/ tan 45 - cos245 + 2cos0/sin30

EVALUATE THE FOLLOWING EXPRESSION WITHOUT USING TRIGONOMETRIC TABLES-
cot 30/ sec 30 + cosec 30/ tan 45 - cos²45 + 2cos0/sin30