1
AP EAPCET 2025 - 23rd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

$$ \sec h^{-1}(\sin \alpha)= $$

A

$\log \left(\sin \alpha+\sqrt{\sin ^2 \alpha-1}\right)$

B

$\log (\tan \alpha+1)$

C

$\log \left(\cot \frac{\alpha}{2}\right)$

D

$\log \left(\frac{1+\tan \alpha}{2 \sin \alpha}\right)$

2
AP EAPCET 2025 - 23rd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

In $\triangle A B C$ if $\cos A \cos B+\sin A \sin B \sin C=1$, then $\sin A+\sin B+\sin C=$

A

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

B

$1+\sqrt{2}$

C

$\frac{2 \sqrt{3}-1}{2}$

D

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

3
AP EAPCET 2025 - 23rd May Morning Shift
MCQ (Single Correct Answer)
+1
-0
In $\triangle A B C$, if $a: b: c=4: 5: 6$, then $\frac{\cos A+3 \cos C}{\cos B}=$
A

1

B

4

C

2

D

3

4
AP EAPCET 2025 - 23rd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

In $\triangle A B C$, if $a=6, b=8$ and $c=10$, then $\frac{2 r_2 r_3}{r r_1}=$

A

$b+c$

B

$c+a$

C

$a+b$

D

$a+b+c$