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OpenStudy (anonymous):
Give the exact value of each of the following: - cos π/4
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OpenStudy (anonymous):
get to know (memorize) the unit circle. here it is on page 3: http://tutorial.math.lamar.edu/pdf/Trig_Cheat_Sheet.pdf
OpenStudy (zzr0ck3r):
It seems hard, but you will find some pattern that you can use to memorize it. It is the best thing to do imo as far as trig goes.
OpenStudy (anonymous):
thanks
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