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Trigonometry
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OpenStudy (lynfran):
prove cos(-x)/1+tan(-x) - sin(-x)/1+cot(-x) =sinx+cosx
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OpenStudy (anonymous):
|dw:1433560693943:dw|
OpenStudy (anonymous):
there's got to be an easier solution to this. I'm going around in circles
OpenStudy (anonymous):
are there choices to choose from
OpenStudy (lynfran):
yep im stuck there too
OpenStudy (anonymous):
|dw:1433563892629:dw|
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