Math, asked by snehasingh16052005, 6 months ago

prove that: 1+cos^2 A/sin^2 A= 2 cosec^2A-1​

Answers

Answered by EnchantedBoy
3

Step-by-step explanation:

Given:\frac{1+cos²A}{sin²A}

→\frac{1+1-sin²A}{sin²A}

→\frac{2-sin²A}{sin²A}

→\frac{2}{sin²A}-\frac{sin²A}{sin²A}

⇒\huge\boxed{scosec²A-1}

Hence proved←

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