Math, asked by santosh2137, 10 months ago

1+cosA÷1-cosA + 1-cosA÷1+cosA =?

Answers

Answered by CzarCaesar

1

Answer:

(1+cosA)/(1-cosA) + (1-cosA)/(1+cosA)

= (1+cosA)²/(1-cos²A) + (1-cosA)²/(1-cos²A)

= (1 + 2cosA + cos²A + 1 - 2cosA + cos²A)/sin²A

=2cosec²A + 2tan²A

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