The expression tan.(pi/4+1/2cos^(-1)x)...

The expression
`tan.(pi/4+1/2cos^(-1)x)+tan(pi/4-1/2cos^(-1)x)` equals

A

`1/x`

B

x

C

`2/x`

D

2x

Text Solution

Verified by Experts

The correct Answer is:

C

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tan(pi/4+1/2cos^(-1)a/b)+tan(pi/4 - 1/2 cos^(-1) a/b)=

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tan[pi/4+1/2cos^(-1)(a/b)]+tan[pi/4-1/2cos^(-1)(a/b)] is equal to

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