Posted by Mig on September 08, 2002 at 22:54:09:
Can anyone help w/ this?
Find the exact value of each expression without using a calculator.
1. sin pi/3 cos pi/4 - sin pi/4 cos pi/3
2. cos^2 (-270) - sin^2 (-270)
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Comments: : Can anyone help w/ this? : Find the exact value of each expression without using a calculator. : 1. sin pi/3 cos pi/4 - sin pi/4 cos pi/3 : 2. cos^2 (-270) - sin^2 (-270)
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