Q. 65.0( 2 Votes )

Mark the Correct alternative in the following:

If sin α + sin β = a and cos α – cos β = b, then

A.

B.

C.

D. None of these

Answer :

sin α + sin β = a


= a …(I)


cos α – cos β = b


= b …(II)


Dividing equation (II) by equation (I) –



or,


(Ans)

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