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.

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.

Akbar Khan asked a question

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

11 question pls

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.

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)

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

Artha Potdar asked a question

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

Prove that: Tan20tan30tan40tan80=1

Debargha Das asked a question

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

value of tan 12 degree 20 minute

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

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

Akbar Khan asked a question

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

Q12 pls

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:

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

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

Ashadip Ghosh asked a question

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

Q n 15

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

Garima Singh asked a question

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

Solve this:
7. Find AB.

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

Raju asked a question

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

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

Kritika Dudpuri asked a question

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

( sin 29 ° 31') ÷ (cos 60° 29')

Aditya asked a question

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

Plz do thi

Akbar Ali Agwan asked a question

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

Please solve 8c(i,ii)

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 .

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

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

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 °

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

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

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.

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.

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 ?

Ravi Prakash asked a question

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

sin30

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

Jayanth asked a question

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

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

Rudranshu asked a question

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

sin 59 + tan 63°

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

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']

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

Bhavesh Kaushik asked a question

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

Valueof x in degree

Yuvraj Kumar Sah asked a question

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

please please please help solve it fast

Suryansh Kauntey asked a question

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

Q 3 (i) and (ii)

Divyanshi Rana asked a question

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

Pls do this question fast.

Sambit Mallick asked a question

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

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

Saksham Mahato asked a question

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

Pls. Solve Qn.No. 14

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

Saakshi Gudgud asked a question

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

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

Akbar Ali Agwan asked a question

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

Please solve 8c(ii)

Bishakha Bhattacharjee asked a question

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

Sir/Madam can you please solve question no. 17

Jayanth asked a question

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

cos theta - sin theta equals to root 2 Sin Theta then cos theta + sin theta equals to

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