Q4 of 51 Page 54

If tan(A + B) = x and tan(A – B) = y. Find the value of tan 2A and tan2B.

Formula: - (i)


let take 2A = (A + B) + (A – B)


tan2A = tan( (A + B) + (A – B) )



again taking 2B = (A + B) – (A – B)


tan(2B) = tan( (A + B) – (A – B) )



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