Math, asked by vineesha80, 1 year ago

prove that sec theta -tan theta/sec theta + tan thets=1-2sec theta.tan theta+2 tan^2 theta

Answers

Answered by Rishabh9582
2
Secθ-tanθ/secθ+tanθ
(secθ-tanθ)(secθ-tanθ)/(secθ+tanθ)(secθ-tanθ)
(secθ-tanθ)²/sec²θ-tan²θ
(secθ-tanθ)²
sec²θ+tan²θ-2secθ.tanθ
1+tan²θ+tan²θ-2secθ.tanθ
1-2secθ.tanθ+2tan²θ
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