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Find sin""(x)/(2),cos""(x)/(2)andtan""(x...

Find `sin""(x)/(2),cos""(x)/(2)andtan""(x)/(2)` in each of the following.
`sinx=(1)/(4),x` in quadrant II.

Text Solution

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The correct Answer is:
`therefore tan""(x)/(2)=4+sqrt(15)`
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