( cos 40^(@) - sin 40^(@) )/( cos 40^(@)...

`( cos 40^(@) - sin 40^(@) )/( cos 40^(@) + sin 40^(@) )` का मान होगा-

A

`tan 10^(@)`

B

`tan 20^(@)`

C

`tan 5^(@)`

D

`tan 8^(@)`

लिखित उत्तर

Verified by Experts

The correct Answer is:

C

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