SOLUTION: show an evaluatuion of sin 120 degrees uaing the trigonometric addidtion formulas
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Question 599738: show an evaluatuion of sin 120 degrees uaing the trigonometric addidtion formulas
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
show an evaluatuion of sin 120 degrees uaing the trigonometric addidtion formulas
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sin(120) = sin(90+30) = sin(90)cos(30) + cos(90)*sin(30)
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= 1*cos(30) + 0*(1/2)
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= cos(30) = sqrt(30)/2
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Cheers,
Stan H.
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