Math, asked by Azrmehmood8445, 8 months ago

Cosec2a-1/cosec2aequal to cos2a

Answers

Answered by sandy1816
4

Step-by-step explanation:

cosec²a-1/cosec²a

=cot²a/cosec²a

=cos²a/sin²a×sin²a

=cos²a

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