SOLUTION: Get to single trigonometric function
(Sin 15degrees)(cos 75degrees) - (cos 15 degrees) (sin 75 degrees)
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(Sin 15degrees)(cos 75degrees) - (cos 15 degrees) (sin 75 degrees)
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Question 969899: Get to single trigonometric function
(Sin 15degrees)(cos 75degrees) - (cos 15 degrees) (sin 75 degrees) Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! Get to single trigonometric function
(Sin 15degrees)(cos 75degrees) - (cos 15 degrees) (sin 75 degrees)
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sin(15)*cos(90-15) - (cos(15)*sin(90-15))
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sin(15)*sin(15) - cos(15)cos(15)
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sin^2(15)-cos^2(15)
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= cos(2*15)
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= cos(30)
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= sqrt(3)/2
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Cheers,
Stan H.
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