(1/1+tg^2x)+(1/1+ctg^2x)

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Guest Apr 2, 2015

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Best Answer

+130517

+5

1 / [1 + tan^2x] + 1 / [ 1 + cot^2x] =

1/sec^2x + 1/csc^2x =

cos^2x + sin^2x =

1

CPhill Apr 2, 2015

1⁺⁰ Answers

+130517

+5

Best Answer

1 / [1 + tan^2x] + 1 / [ 1 + cot^2x] =

1/sec^2x + 1/csc^2x =

cos^2x + sin^2x =

1

CPhill Apr 2, 2015

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