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OpenStudy (anonymous):
What does cos mean, what is it...
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OpenStudy (anonymous):
cosine
OpenStudy (anonymous):
yeah, but what is a cosine
OpenStudy (anonymous):
i seriously dont know
OpenStudy (anonymous):
just a basic definition
OpenStudy (anonymous):
It is a very close relative of sin. They're like cousins.
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OpenStudy (anonymous):
functions are also commonly used to model periodic
OpenStudy (anonymous):
Consider an angle, and suppose that it is part of a right triangle, and it is *not* the 90 degree angle. Then the cosine is the ratio of the length of the side opposite the angle to the length of the hypotenuse.
OpenStudy (anonymous):
ok ok thanks
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