Cot(90°-A)tan A/sec²A -sin²A=0
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1
tan²A/sec²A-sin²A=0
sin²A-sin²A=0
LHS=RHS
Hence proved
sin²A-sin²A=0
LHS=RHS
Hence proved
Answered by
1
LHS=tanA×tanA/sec²A. - sin²A
=tan²A/sec²A - sin²A
=sin²A cos²A/cos²A - sin²A
=sin²A- sin²A
=0=RHS
hence proved
=tan²A/sec²A - sin²A
=sin²A cos²A/cos²A - sin²A
=sin²A- sin²A
=0=RHS
hence proved
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