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KirbyLegs
 one year ago
Best ResponseYou've already chosen the best response.0Well there is a couple of ways to go about this problem. You could graph it or you could get an exact number. Try putting cos(2pi) into your calculator to get a decimal answer.

phi
 one year ago
Best ResponseYou've already chosen the best response.0with a calculator, but people memorize the sin, cos and tan of "special" angles 2 pi is a special angle.

sweetcandy01
 one year ago
Best ResponseYou've already chosen the best response.0thanks for the responses! i thought there was a way to solve it by hand.. i'll just memorize it then!

AravindG
 one year ago
Best ResponseYou've already chosen the best response.0Think graphically dw:1371404215303:dw

AravindG
 one year ago
Best ResponseYou've already chosen the best response.0It comes back to 0 So its equivalent to cos 0

KirbyLegs
 one year ago
Best ResponseYou've already chosen the best response.0Well in a unit circle yes. Is that what the problem is asking for? Cosine is in the fourth quadrant, it is always positive in there. The coordinates of 2pi are on 0 degrees

anuupkc27
 one year ago
Best ResponseYou've already chosen the best response.0cos2pi =cos360 =cos(90*4+0) = cos0 =1
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