1
TS EAMCET 2020 (Online) 10th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

$$ \log (9+3 \sqrt{2}(2+\sqrt{5})+4 \sqrt{5})= $$

A

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

B

$\cosh ^{-1} 3+\sinh ^{-1} 3$

C

$\tanh ^{-1} 3+\sinh ^{-1} 3$

D

$\cosh ^{-1} 3+\tanh ^{-1} 3$

2
TS EAMCET 2020 (Online) 10th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

In a $\triangle A B C,\left(b^2-c^2\right) \cot A+\left(c^2-a^2\right) \cot B=$

A

0

B

$2 R^2[\sin 2 A-\sin 2 B]$

C

$\left(b^2-a^2\right) \cot (A+B)$

D

$2 R^2[\tan 2 A-\tan 2 B]$

3
TS EAMCET 2020 (Online) 10th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

In a $\triangle A B C, \frac{\Delta^2}{a^2+b^2+c^2}\left(\frac{1}{r_1^2}+\frac{1}{r_2^2}+\frac{1}{r_3^2}+\frac{1}{r^2}\right)=$

A

0

B

1

C

$\Delta$

D

S

4
TS EAMCET 2020 (Online) 10th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

If $R: r_1: r=5: 12: 2$, then $r+r_3+r_2-r_1=$

A

$\cos A$

B

$\sin A$

C

$2 r r_1$

D

$2 r_1^2 r$

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