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May 6, 2016
Posted by **AwesomeGuy** on Monday, February 18, 2013 at 2:40am.

1.) TAN^5 X= TAN³X SEC²X-TAN³X

2.) COS³X SIN²X= (SIN²X-SIN^4X)COS X

- Trigonometry -
**Reiny**, Monday, February 18, 2013 at 8:26amLS = cosx (cos^2 x) (sin^2 x)

= cosx (1 - sin^2 x) (sin^2 x)

= cosx(sin^2 x - sin^4 x)

= RS