Thread: How do you simplify this problem?
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Old June 18th, 2008, 03:12 PM
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Quote:
Originally Posted by Darkhrse99 View Post
sin(\frac{-3pi}{4}) cos(\frac{5pi}{6})
Didn't I tell you before to memorize certain trigonometric values? It seems you have not fulfilled this assignment.

sin(-3pi/4) = -sin(3pi/4) = -sin(pi/4) = ???

cos(5pi/6) = -cos(pi/6) = ???

Now what?

Note: If you're using LaTeX, feel free to put a slash in front of those "pi"s. Excellent results can be obtained.
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