यदि (cos alpha)/(cos beta) = m एवं (cos ...

यदि `(cos alpha)/(cos beta) = m` एवं `(cos alpha)/( sin beta) = n` तो `(m^(2) +n^(2)) cos^(2)beta = ?`

A

1

B

`2n^(2)`

C

`n^(2) +3`

D

`n^(2)`

लिखित उत्तर

Verified by Experts

The correct Answer is:

D

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