prove that:
sin2A/cos2A + cos2A/sin2A = 1/sin2A cos2A- 2
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Answer:
proved
Step-by-step explanation:
to prove:sin^2A/cos^2A+cos^2/sin^2A=1/sin^Acos^2A-2
sin^2/cos^2+cos^2/sin^2
=sin^4+cos^4/cos^2A.sin^2A
=sin^2A+cos^2A-2sin^2Acos^2A/cos^2sin^2
=1-2sin^2A.cos^2A/cos^2.sin^2A
=1/cos^2A. sin^2-2
hence LHS=RHS
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