1
AP EAPCET 2024 - 22th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

If $\sinh x=\frac{\sqrt{21}}{2}$, then $\cosh 2 x+\sinh 2 x$ is equal to

A
$\frac{21}{2}$
B
$\frac{25}{2}$
C
$\frac{23+5 \sqrt{21}}{2}$
D
$\frac{32+5 \sqrt{23}}{2}$
2
AP EAPCET 2024 - 22th May Evening Shift
MCQ (Single Correct Answer)
+1
-0
In a $\triangle A B C$, if $a=13, b=14$ and $c=15$, then $r_1=$
A
$\frac{23}{2}$
B
$\frac{21}{2}$
C
$\frac{25}{2}$
D
$\frac{26}{2}$
3
AP EAPCET 2024 - 22th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

In $a \triangle A B C$ if $r: R: r_2=1: 3: 7$, then $\sin (A+C)+\sin B$ is equal to

A
0
B
$\sqrt{3}$
C
1
D
2
4
AP EAPCET 2024 - 22th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

In $\triangle A B C,\left(r_1+r_2\right) \operatorname{cosec}^2 \frac{C}{2}$ is equal to

A
$2 R \cot ^2 \frac{C}{2}$
B
$4 R \tan ^2 \frac{C}{2}$
C
$4 R \cot ^2 \frac{C}{2}$
D
$2 R \tan ^2 \frac{C}{2}$
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