Question

prove this
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Answer 1

Remember

Formulas and derivations used=>>

1)Sin^2A + Cos^2A = 1

2)SinA = 1/SecA

3)CosA = 1/SecA

4)(A+B) +^2 = A^2 + B^2 + 2 A×B

5)A^2 + B^2 = (A+B) ^2 - 2AB

OR

A^2 + B^2 = (A-B) ^2 + 2AB

Plz refer to the attachment for the the explanation with proof.

Thanks

Answer 2

Hello Friend

The answer of u r question is

Is in the pic.

Thank you..☺️☺️