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OpenStudy (anonymous):
find the exact value of cos for an angle in standard position whose terminal side contains the point (-5,6)
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OpenStudy (precal):
|dw:1386033299282:dw|
OpenStudy (precal):
cosine is adj/hyp so adj is 6 because it is opposite the angle now use \[a^2+b^2=c^2\] to figure out your hypotenuse
OpenStudy (precal):
|dw:1386033386317:dw| since it is in the second quadrant the value is negative since only sine and csc are positive
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