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OpenStudy (anonymous):
yooo can someone help me with evaluating the expression by sketching a triangle, sin(2cos -1 3/5)
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OpenStudy (anonymous):
is this the expression: \(\large sin(2cos^{-1}(\frac{3}{5})) \) ???
OpenStudy (anonymous):
if yes, then let \(\large y=cos^{-1}\frac{3}{5} \) so cosy = 3/5. draw a right triangle depicting that trig relation:|dw:1352707992013:dw|
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