Thread: How do you simplify this problem?
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Old June 18th, 2008, 08:00 PM
TKHunny TKHunny is offline
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You must MEMORIZE a few important values.

0\;\;\sin(0)\;=\;0\;\;\cos(0)\;=\;1

\frac{\pi}{6}\;\;\sin(\frac{\pi}{6})\;=\;\frac{1}{2}\;\;\cos(\frac{\pi}{6})\;=\;\frac{\sqrt{3}}{2}

\frac{\pi}{4}\;\;\sin(\frac{\pi}{4})\;=\;\frac{\sqrt{2}}{2}\;\;\cos(\frac{\pi}{4})\;=\;\frac{\sqrt{2}}{2}

\frac{\pi}{3}\;\;\sin(\frac{\pi}{3})\;=\;\frac{\sqrt{3}}{2}\;\;\cos(\frac{\pi}{3})\;=\;\frac{1}{2}

\frac{\pi}{2}\;\;\sin(\frac{\pi}{2})\;=\;1\;\;\cos(\frac{\pi}{2})\;=\;0

There is NO substitute for memorizing this tableau. Put it in your brain.

Note: You still have \sqrt{1}. Don't write things that make no sense.
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