Math, asked by soubamronald, 3 months ago

prove cos²ø-sin²ø=tan²ø

Answers

Answered by pundurangaraorangara

0

Step-by-step explanation:

We have , LHS =cos ²theta(1+tan²theta)

=cos²theta (1+tan²theta)

= cos²theta.1+tan²theta.cos²theta

= cos²theta +sin²theta /cos²theta.cos²theta

= sin²theta +cos²theta

= 1

Hence proved

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