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R. Lasyapriya
Subject: Math
, asked on 24/5/18
I am reposting my query please do answer aa fast as possible.
Q.17. Compare the areas of the right angled triangles ABC and DEF in which
$\angle $
A = 30
$\xb0$
,
$\angle $
B = 90
$\xb0$
, AC = 4 cm,
$\angle $
D = 60
$\xb0$
,
$\angle $
E = 90
$\xb0$
and DE = 4 cm.
Answer
1
Fatima Nadeem
Subject: Math
, asked on 22/5/18
Q4. The area of the triangle formed by the line
$\frac{x}{p}+\frac{y}{p}=1$
with the coordinate axes is
(a)
$\frac{1}{2}$
pq
(b)
$\frac{1}{4}$
pq
(c) 2 pq
(d) pq
Answer
2
Atharva
Subject: Math
, asked on 22/5/18
Q.15.
$\frac{{\mathrm{cos}}^{2}\theta}{1-\mathrm{tan}\theta}+\frac{{\displaystyle {\mathrm{sin}}^{3}}{\displaystyle \theta}}{\mathrm{sin}{\displaystyle \theta}{\displaystyle -}{\displaystyle \mathrm{cos}}{\displaystyle \theta}}=1+\mathrm{sin}\theta .\mathrm{cos}\theta $
Answer
1
Atharva
Subject: Math
, asked on 22/5/18
(cosecA-sinA) (secA-cosA)=1/sin^2A-sin^4A
Answer
1
R. Lasyapriya
Subject: Math
, asked on 21/5/18
Please prove the following and please do not send any links please.
Q7. If x = a cos
^{2}
$\mathrm{\theta}$
, y = b sin
^{3}
$\mathrm{\theta}$
, prove that
${\left(\frac{x}{a}\right)}^{\raisebox{1ex}{$2$}\!\left/ \!\raisebox{-1ex}{$3$}\right.}+{\left(\frac{y}{b}\right)}^{\raisebox{1ex}{$2$}\!\left/ \!\raisebox{-1ex}{$3$}\right.}$
=1
.
Answer
1
R. Lasyapriya
Subject: Math
, asked on 21/5/18
Please prove this and do not send any links please.
Thnx for your help.
$\mathbf{5}\mathbf{.}Ifa\mathrm{cos}\theta -b\mathrm{sin}\theta =c,provethata\mathrm{sin}\theta +b\mathrm{cos}\theta =\pm \sqrt{{a}^{2}+{b}^{2}+{c}^{2}}$
Answer
2
R. Lasyapriya
Subject: Math
, asked on 20/5/18
1. If
$1+{\mathrm{sin}}^{2}\theta =3\mathrm{sin}\theta .\mathrm{cos}\theta $
, then prove that
$\mathrm{tan}\theta =1or\frac{1}{2}.$
Answer
1
Jagrati
Subject: Math
, asked on 19/5/18
Question 20
Answer
1
Jagrati
Subject: Math
, asked on 19/5/18
Question 61
Q61. If cos A – sin A = m and cos A + sin A = n, show that
$\frac{{\mathrm{m}}^{2}-{\mathrm{n}}^{2}}{{\mathrm{m}}^{2}+{\mathrm{n}}^{2}}=-2\mathrm{sin}\mathrm{A}\mathrm{cos}\mathrm{A}=\frac{2}{\mathrm{tan}{\displaystyle}{\displaystyle \mathrm{A}}{\displaystyle}{\displaystyle +}{\displaystyle \mathrm{cot}}{\displaystyle}{\displaystyle \mathrm{A}}}$
.
Answer
1
Jagrati
Subject: Math
, asked on 19/5/18
If 5cos theta+7 sin theta=7,prove that5 sin theta-7 cos theta=+-5
Answer
1
R. Lasyapriya
Subject: Math
, asked on 19/5/18
Justify whether True or false. Solve and please do not send any links for the query . Thnx for your help.
Q.
$\mathrm{cos}\theta =\frac{{a}^{2}+{b}^{2}}{2ab}$
where a and b are two distinct numbers such that ab > 0.
Answer
1
Sahil
Subject: Math
, asked on 19/5/18
If sin theetha +cos theetha =2
Cosec theetha + sec theetha =???
Answer
2
R. Lasyapriya
Subject: Math
, asked on 19/5/18
Solve the 3 Question and please prove it true or false.
Q.3.
$\sqrt{\left(1-{\mathrm{cos}}^{2}\theta \right)se{c}^{2}\theta}=\mathrm{tan}\theta $
Answer
3
Sumaiyya Sultana
Subject: Math
, asked on 18/5/18
if sin theta = cos[theta-6] find the value of theta
Answer
1
R. Lasyapriya
Subject: Math
, asked on 18/5/18
Write True or false and justify your answer with reasoning .
Please do not send any links bcoz the links are confusing.
Thnx for your help.
Answer
1
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Q.17. Compare the areas of the right angled triangles ABC and DEF in which $\angle $A = 30$\xb0$, $\angle $B = 90$\xb0$, AC = 4 cm, $\angle $D = 60$\xb0$, $\angle $E = 90$\xb0$ and DE = 4 cm.

(a) $\frac{1}{2}$ pq

(b) $\frac{1}{4}$ pq

(c) 2 pq

(d) pq

Q7. If x = a cos

^{2}$\mathrm{\theta}$, y = b sin^{3}$\mathrm{\theta}$, prove that ${\left(\frac{x}{a}\right)}^{\raisebox{1ex}{$2$}\!\left/ \!\raisebox{-1ex}{$3$}\right.}+{\left(\frac{y}{b}\right)}^{\raisebox{1ex}{$2$}\!\left/ \!\raisebox{-1ex}{$3$}\right.}$ =1.Thnx for your help.

$\mathbf{5}\mathbf{.}Ifa\mathrm{cos}\theta -b\mathrm{sin}\theta =c,provethata\mathrm{sin}\theta +b\mathrm{cos}\theta =\pm \sqrt{{a}^{2}+{b}^{2}+{c}^{2}}$

Q61. If cos A – sin A = m and cos A + sin A = n, show that

$\frac{{\mathrm{m}}^{2}-{\mathrm{n}}^{2}}{{\mathrm{m}}^{2}+{\mathrm{n}}^{2}}=-2\mathrm{sin}\mathrm{A}\mathrm{cos}\mathrm{A}=\frac{2}{\mathrm{tan}{\displaystyle}{\displaystyle \mathrm{A}}{\displaystyle}{\displaystyle +}{\displaystyle \mathrm{cot}}{\displaystyle}{\displaystyle \mathrm{A}}}$.

Q. $\mathrm{cos}\theta =\frac{{a}^{2}+{b}^{2}}{2ab}$ where a and b are two distinct numbers such that ab > 0.

Cosec theetha + sec theetha =???

Q.3. $\sqrt{\left(1-{\mathrm{cos}}^{2}\theta \right)se{c}^{2}\theta}=\mathrm{tan}\theta $

Please do not send any links bcoz the links are confusing.

Thnx for your help.