Question

tan square theta cos square theta =1-cos square theta

Answer 1

Here is your Proof. Hope it helps u

Answer 2

Hi ,

Here I am using A instead of theta.

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1 ) tan²A = sin²A/cos²A

2 ) sin²A = 1 - sin²A

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LHS = tan²Acos²A

= ( Sin²A/cos²A ) cos²A

= Sin²A

= 1 - cos²A

= RHS

I hope this helps you.

: )