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OpenStudy (anonymous):
what is the value of sin(-240)
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OpenStudy (anonymous):
degree mode?
OpenStudy (anonymous):
yes
OpenStudy (anonymous):
-240 + 360 = 120 so we need sin(120) What is sin (60)?
OpenStudy (anonymous):
Sin is positive in QII; thus, Sin (-240) = sin(120) = sin (60) = sqrt(3)/2
OpenStudy (anonymous):
so what do you use to solve these types of problems?
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OpenStudy (anonymous):
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