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Mathematics, 08.06.2021 20:20 bm42400

20 points & Brainliest to the one who gets ALL of them correct! NEED HELP ASAP Verify these Identities & SHOW YOUR WORK:

1. cosx−cosxsin²x = cos³x

2. \frac{sinx}{1+cosx} = \frac{1-cosx}{sinx}

3. cos⁴b−sin⁴b = 1−2sin²b

4. \frac{siny+cosy}{siny}- \frac{cosy-siny}{cosy} = \frac{secy}{cosy}

5. (secx−tanx)² = \frac{1-sinx}{1+sinx}

HELP!!!

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