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If tan x = 3/4, pi lt x lt (3pi)/(2), t...

If `tan x = 3/4, pi lt x lt (3pi)/(2), ` then the value of `cos ""x/2 ` is

A

`-(1)/(sqrt10)`

B

`(3)/(sqrt10)`

C

`(1)/(sqrt10)`

D

`-(3)/(sqrt10)`

Text Solution

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The correct Answer is:
A
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TARGET PUBLICATION-TRIGONOMETRIC FUNCTIONS OF COMPOUND ANGLES -COMPETITIVE THINKING
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  8. If theta in ((pi)/(2), (3pi)/(2)), then the value of sqrt(4 cos ^(4) t...

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