यदि tan theta = 1 हो तो cos theta क...

यदि `tan theta = 1 ` हो तो ` cos theta ` का मान होगा :

A

1

B

` (1)/(2)`

C

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

D

`(1)/( sqrt(2))`

लिखित उत्तर

Verified by Experts

The correct Answer is:

D

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