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If tanA=n tan B and sinA=m sin B, then t...

If tanA=n tan B and sinA=m sin B, then the value of `cos^2 A` is
यदि tanA=n tan B और sinA=m sin B, तो `cos^2 A` का मान है

A

`(m^2-1)/(n^2+1)`

B

`(m^2+1)/(n^2+1)`

C

`(m^2+1)/(n^2-1)`

D

`(m^2-1)/(n^2-1)`

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CHAMPION PUBLICATION-2015 TIER-II PAPER(17)-EXERCISE
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