Question

prove that 1+cosA/sin 2A=1/1-cosA​

Answer 1

HEY! REFER TO THE ATTACHMENT

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Answer 2

To prove , 1+CosA/Sin²A = 1/1-CosA

LHS

1+ CosA / Sin²A

=} 1 + CosA / 1 - Cos²A [ Sin²A = 1 - Cos²A ]

=} 1 + CosA / (1)² - (CosA)²

=} 1 + CosA / ( 1- CosA )( 1 + CosA ) [ (a)² - (b)² = (a + b)(a - b)

=} 1 / 1 - CosA

Hence proved ,

LHS = RHS

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