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AP EAPCET 2024 - 23th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
In $\triangle A B C, a^2 \sin 2 B+b^2 \sin 2 A$ is equal to
A
$2 a b \cos A$
B
$2 a b \sin A$
C
$2 \mathrm{ab} \sin \mathrm{C}$
D
$2 a b \cos C$
2
AP EAPCET 2024 - 23th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

$$ \text { In } \triangle A B C, \frac{r_2\left(r_1+r_3\right)}{\sqrt{r_1 r_2+r_2 r_3+r_3 r_1}} \text { is equal to } $$

A
a
B
b
C
c
D
s
3
AP EAPCET 2024 - 23th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
In $\triangle A B C,\left(r_2+r_3\right) \operatorname{cosec}^2 \frac{A}{2}$ is equal to
A
$4 R$
B
$4 R \cot ^2 \frac{\mathrm{~A}}{2}$
C
$4 R \tan ^2 \frac{A}{2}$
D
$R \tan ^2 \frac{A}{2}$
4
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
$\frac{26}{2}$
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