* LHS = RHS. IPLE 23 Using the identity sec? A = 1 + tan²A, prove that sin A-cos A +1 1 sin A +cos A-1 (sec A-tan A)
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* lhs = rhs. iple 23 using the identity sec? a = 1 + tan²a, prove that sin a-cos a +1 1 sin a +cos a-1 (sec a-tan a) a,lhs#67899 ,ok
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