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January 30, 2015

January 30, 2015

Posted by **Lori** on Wednesday, April 7, 2010 at 9:41am.

- PreCalc -
**Reiny**, Wednesday, April 7, 2010 at 10:04amIn your isosceles triangle create a right-angled triangle with a base of 3 and hypotenuse of 5

then cos(theta) = 3/5

theta = 53.13º

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