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OpenStudy (anonymous):
Write the expression as the sine, cosine, or tangent of an angle. sin 48° cos 15° - cos 48° sin 15° A. cos 33° B. cos 63° C. sin 63° D. sin 33°
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jimthompson5910 (jim_thompson5910):
use the identity sin(x)cos(y) - cos(x)sin(y) = sin(x-y)
OpenStudy (luigi0210):
What jim said, so what is sin(48-15) equal?
OpenStudy (anonymous):
33
OpenStudy (anonymous):
sin(33)
OpenStudy (luigi0210):
yup
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