Math, asked by khiladi7866, 10 months ago

1+cos x/1-cos x=tan^2x/(sec x-1)^2

Answers

Answered by sridharkommaal

1

Answer:

RHS

tan²X/(sec x - l )² = sec²x-1/(sec x-1 )²

=( sec x - 1) (sec x + 1)

(sec x-1)²

=sec x +1/sec x -1=1+1/cos x/1/cos x-1

=1 + cos x /1-cos x =LHS hence proved

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