Math, asked by kajalkarn25, 10 months ago

prove that 1 by 1 + Cos A + 1 by 1-cos A is equal to 2 cosec²A

Answers

Answered by sandy1816

1

Step-by-step explanation:

1/1+cosA + 1/1-cosA

=(1-cosA)+(1+cosA)/1-cos²A

=2/sin²A

=2cosec²A

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