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Old 07-27-2007   #1
symmetry
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Default Trigonometry Operations?

Let t = theta.If cos(t) = 0.2, find the value of cos(t) + cos(t + 2pi) + cos(t + 4pi).
 
Old 07-27-2007   #2
harshadanywhere
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0.2+0.2+0.2 = 0.6
 
 

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