1
AP EAPCET 2025 - 22nd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

$$ \sin ^3 10^{\circ}+\sin ^3 50^{\circ}-\sin ^3 70^{\circ}= $$

A

$\frac{-3}{8}$

B

$\frac{3}{4}$

C

$\frac{\sqrt{3}}{2}$

D

$\frac{-1}{3}$

2
AP EAPCET 2025 - 22nd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

The number of solutions of $\sin 2 x+\cos 4 x=2$ in the interval $[-\pi, \pi]$ is

A

3

B

2

C

0

D

1

3
AP EAPCET 2025 - 22nd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

The range of the real valued function $f(x)=\cos ^{-1}(-x)+\sin ^{-1}(-x)+\operatorname{cosec}^{-1}(x)$ is

A

$\left\{0, \frac{\pi}{2}\right\}$

B

$\left[0, \frac{\pi}{2}\right) \cup\left(\frac{\pi}{2}, \pi\right]$

C

$\left(0, \frac{\pi}{2}\right)$

D

$\{0, \pi\}$

4
AP EAPCET 2025 - 22nd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

If $\cosh 2 x=199$, then $\cot h x=$

A

$\frac{5}{3 \sqrt{11}}$

B

$\frac{5}{6 \sqrt{11}}$

C

$\frac{7}{3 \sqrt{11}}$

D

$\frac{10}{3 \sqrt{11}}$