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OpenStudy (anonymous):
how do I solve sin(2 arctan12/5) ?
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OpenStudy (anonymous):
would be the same as solving any other arc prob like this ?? it looks like id have to a double angle identity
OpenStudy (amistre64):
id draw a triangle
OpenStudy (amistre64):
|dw:1385238460640:dw| and yes, double id might be good to work into it
OpenStudy (amistre64):
or a calculator ....
OpenStudy (anonymous):
nvm I got it haha thanks btw
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