Question

1/cos theta-cos theta=tan theta. sin theta​

Answer 1

Answer:

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Step-by-step explanation:

LHS

1/cosθ- cosθ

or, 1 - cos²θ/ cosθ

∵  1 - cos²θ = sin²θ

So, sin²θ/ cosθ

or sinθ× sinθ/ cosθ................ [∵ sinθ/cosθ= tanθ]  

= tanθ.sinθ

hence proved LHS = RHS .