यदि sqrt((1-costheta)/(1+costheta))xxsqr...

यदि `sqrt((1-costheta)/(1+costheta))xxsqrt((cosectheta-cottheta)/(cosectheta+cottheta)) = (1-r)/(1+r)` है, तो r का मान होगा :

A

`sin theta`

B

`cosec theta`

C

`sec theta`

D

`cos theta`

लिखित उत्तर

Verified by Experts

The correct Answer is:

D

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