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OpenStudy (anonymous):
express as a single trig formula, then evaluate: sin45°cos15°-cos45°sin15°
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OpenStudy (mrdoe):
you should recognize this as the result of the sum/difference trig id's, shouldn't be to bad from there
OpenStudy (anonymous):
from the equation i got sin[45°-(-15°)] =sin60°
OpenStudy (anonymous):
@MrDoe
OpenStudy (mrdoe):
does that clear it up?
OpenStudy (anonymous):
so you're saying i need to evaluate sin45 and sin15 right? then take the diffrence
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OpenStudy (precal):
|dw:1357169579074:dw|
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