sin ^(-1) "" (1)/(sqrt5) cot ^(-1) 3 बरा...

`sin ^(-1) "" (1)/(sqrt5) cot ^(-1) 3` बराबर है -

A

`(pi)/(6)`

B

`(pi)/(4)`

C

`(pi)/(3)`

D

`(pi)/(2)`

Verified by Experts

The correct Answer is:

B

sin ^(-1) "" (1)/(sqrt5) cot ^(-1) 3 बराबर है -
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सिद्ध करे कि 4(cot^(-1)3+cosec^(-1)sqrt5)=pi.
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sin^(-1)""1/sqrt5+cot^(-1)3=pi/4
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"cosec"^(-1)sqrt5+cot^(-1)3=pi/4
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tan^(-1)""1/2+tan^(-1)""1/3=sin^(-1)""1/sqrt5+cot^(-1)3=pi/2
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सिद्ध कीजिए - tan^(-1). 1/2 + tan^(-1) . 1/3 = sin^(-1) . 1/sqrt5 +...
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2tan^(-1)(1//2)बराबर है :
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মান নির্ণয় করো:cot(sin^-1""1/sqrt5+sin^-1"2/sqrt5)
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প্রমাণ করো:4(cot^-1 3+cosec^-1 sqrt5)=pi
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