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OpenStudy (anonymous):
If you know the values of sin (x/2) and cos (x/2), how can you determine the value of sin x without calculating x?
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OpenStudy (anonymous):
by using the identities: half/double angle formulas, etc.
OpenStudy (anonymous):
Can you start me off?
OpenStudy (amistre64):
i can try
OpenStudy (amistre64):
spose x/2 = t ; then x = 2t sin(2t) identities to waht?
OpenStudy (muhammad_nauman_umair):
by the formula sinx=2sin(x/2)cos(x/2)
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