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OpenStudy (anonymous):
Write the expression as either the sine, cosine, or tangent of a single 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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OpenStudy (anonymous):
ans is sin(33)
OpenStudy (anonymous):
by the formula sin (a-b)
OpenStudy (anonymous):
what are the meanings of the trigonometic fuctions cos and sin?
OpenStudy (anonymous):
ie. sin (48- 15)= sin(33) take 48 as 'a' and 15 as 'b'
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