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If Tan theta(1)=k cot theta(2) then(cos ...

If `Tan theta_(1)=k cot theta_(2)` then`(cos (theta_(1)+theta_(2)))/(cos (theta_(1)-theta_(2)))=`

A

`(1+k)/(1-k)`

B

`(1-k)/(1+k)`

C

`(k+1)/(k-1)`

D

`(k-1)/(k+1)`

Text Solution

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The correct Answer is:
B
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