Mathematics, 08.06.2021 01:20, Farhan54019

Trigonometry. Brainliest to the one who gets ALL of them correct! NEED HELP ASAP Verify these Identities:

1. cosx−cosxsin²x = cos³x

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

3. $\frac{1}{1+cosa}$ + $\frac{1}{1-cosa}$ = 2+2cot²a

4. cos⁴b−sin⁴b = 1−2sin²b

5. $\frac{siny+cosy}{siny}- \frac{cosy-siny}{cosy}$ = $\frac{secy}{cosy}$

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

HELP!!!

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Trigonometry. Brainliest to the one who gets ALL of them correct! NEED HELP ASAP Verify these Ident...