1
AP EAPCET 2025 - 26th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

The number of solutions of the equation $4 \cos 2 \theta \cos 3 \theta=\sec \theta$ in the interval $[0,2 \pi]$ is

A

12

B

8

C

16

D

4

2
AP EAPCET 2025 - 26th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

$$ \tan \left(2 \tan ^{-1}\left(\frac{1}{3}\right)+\tan ^{-1}\left(\frac{1}{7}\right)\right)= $$

A

$\frac{1}{\sqrt{3}}$

B

$\sqrt{3}$

C

1

D

$3 / 7$

3
AP EAPCET 2025 - 26th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

$$ \tanh ^{-1}\left(\frac{1}{3}\right)+\operatorname{coth}^{-1}(3)= $$

A

$\operatorname{sech}^{-1}\left(\frac{1}{3}\right)$

B

$\operatorname{cosech}^{-1}\left(\frac{1}{3}\right)$

C

$\cosh ^{-1}\left(\frac{4}{3}\right)$

D

$\sinh ^{-1}\left(\frac{3}{4}\right)$

4
AP EAPCET 2025 - 26th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

In a $\triangle A B C$, if $A=30^{\circ}$ and $\frac{b}{(\sqrt{3}+1)^2+2(\sqrt{2}-1)} =\frac{c}{(\sqrt{3}+1)^2-2(\sqrt{2}-1)}$, then $B$

A

$60^{\circ}$

B

$97.5^{\circ}$

C

$75^{\circ}$

D

$52.5^{\circ}$