please answer the 4 question
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LHS = sin/(sin - cos)/sin + cos/(cos - sin)/cos
= sin^2/(sin - cos) + cos^2/(cos - sin)
= sin^2/(sin - cos) - cos^2/(sin - cos)
= (sin^2 - cos^2)/(sin - cos)
= (sin + cos) (sin - cos)/(sin - cos)
= cos + sin = RHS. HENCE PROVED.
= sin^2/(sin - cos) + cos^2/(cos - sin)
= sin^2/(sin - cos) - cos^2/(sin - cos)
= (sin^2 - cos^2)/(sin - cos)
= (sin + cos) (sin - cos)/(sin - cos)
= cos + sin = RHS. HENCE PROVED.
neil13:
please silve it on paper
ok
i cant do it now
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