Math, asked by learner248, 10 months ago

Help me solve the trigonometric proof above

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Answered by sandy1816

1

Step-by-step explanation:

1-2cosecAcotA+2cot²A

=cosec²A-cot²A-2cosecA+2cot²A

=(cosecA-cotA)²

=(1/sinA-cosA/sinA)²

=(1-cosA/sinA)²

=(1-cosA)²/sin²A

=(1-cosA)²/1-cos²A

=1-cosA/1+cosA

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