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If 0 lt theta lt (pi)/(2) and tan theta ...

If `0 lt theta lt (pi)/(2)` and tan `theta = (sqrt(5))/(2)` then cos `theta` is equal to

A

`(1)/(2)`

B

`(sqrt(3))/(2)`

C

`(1)/(3)`

D

`(2)/(3)`

Text Solution

Verified by Experts

The correct Answer is:
D
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