tan A + sinA = m,tanA-sinA=n.prove (m^2-n^2)^2=16mn
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msquare-nsquare=4tanA sinA. (1)
mn=tansquareA-sinsquareaA. (2)
by solving.
(1)square=16(2)
mn=tansquareA-sinsquareaA. (2)
by solving.
(1)square=16(2)
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