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Trigonometry 7 Online
OpenStudy (anonymous):

express as a single trig formula, then evaluate: sin45°cos15°-cos45°sin15°

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

OpenStudy (precal):

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