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Mathematics 15 Online
OpenStudy (anonymous):

I NEED HELP. use the fact that the trigonometric functions are periodic to find the exact value of each expression. cos 420°

OpenStudy (anonymous):

420 LOL

OpenStudy (anonymous):

this will help http://www.wolframalpha.com/input/?i=+cos+420%C2%B0

OpenStudy (anonymous):

it cant be 420 degrees cause a triangle has a total of 180

OpenStudy (anonymous):

i got it ^_^ http://www.420tribe.com/wp-content/uploads/2011/02/420weed.jpg

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