Question

1+2cos^2A÷1+3cot^2A=sin^2A

Answer 1

(1+cos^2A)/1+3cot^2A
=(1+cos^2A)sin^2/sin^2A+3cos^2 A
=(1+cos^2A)sin^2A/1+cos^2A
=sin^2A



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Answer 2

Answer:

1+2cos^2A÷1+3cot^2A=sin^2A

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