Math, asked by Ashutoshw2021, 27 days ago

Please tell me fast

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Answered by gsingh5be19

2

Answer:

cot^2A - 1/sin^2A

=cos^2A/sin^2A -1/sin^2A

=cos^2A-1/sin^2A

=-(1-cos^2A)/sin^2A

= -sin^2A/sin^2A

= -1

formulas used are sin^2A =1-sin^2A

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