SOLUTION: (sin2x/ 1+cos2x) * (cosx/1－cosx) HOW TO WORK OUT TI THANK YOU VERY MUCH

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Question 405969: (sin2x/ 1+cos2x) * (cosx/1－cosx) HOW TO WORK OUT TI THANK YOU VERY MUCH
Answer by Tatiana_Stebko(1326) About Me  (Show Source):
You can put this solution on YOUR website!
%28sin%282x%29%2F%281%2Bcos%282x%29%29%29%2A%28cos%28x%29%2F%281-cos%28x%29%29%29
Use formulas: sin+%282x%29=2sin%28x%29cos%28x%29
___________1=%28sin%28x%29%29%5E2%2B%28cos%28x%29%29%5E2
___________cos%282x%29=%28cos%28x%29%29%5E2-%28sin%28x%29%29%5E2
___ then
.

Multiply numerator and denominator of the fraction by %281%2Bcos%28x%29%29

.
.
we can use formulas sin%28x%29=2sin%28x%2F2%29cos%28x%2F2%29
______________1-cos%28x%29=2%28sin%28x%2F2%29%29%5E2