Math, asked by Ankitmehra, 1 year ago

Prove that tan1tan2tan3---tan89=1

Answers

Answered by Sweatasaha21

tan1 * tan89 * tan 2 *tan88.........
=tan1*cot(90-89) *tan2*cot(90-88) ........
=tan1*cot1*tan2*cot2*tan3*cot3......
=tan1* (1/tan1)*tan2*(1/cot2)......
=1 (ans) ...

hope helped,......

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