Math, asked by brainlyuser9765, 11 months ago

prove that cot A/2 = sin A/ 1+cotA

Answers

Answered by arnabsaikia43

0

Step-by-step explanation:

CotA- tanA

=cosA/sinA- sinA/cosA

=cos^2A-sin^2A)/sinAcosA

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

=cos^2A-1+cos^2A/sinAcosA

=2cos^2A-1/sinAcosA

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