SOLUTION: Let (theta) be the angle in standard position whose terminal side contains the given point (-2,1), then compute cos(theta) and sin(theta)

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Question 897573: Let (theta) be the angle in standard position whose terminal side contains the given point (-2,1), then compute cos(theta) and sin(theta)
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Let (theta) be the angle in standard position whose terminal side contains the given point (-2,1), then compute cos(theta) and sin(theta)
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x = -2, y = 1
So, r = sqrt(2^2 + 1^2) = sqrt(5)
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cos(t) = x/r = -2/sqrt(5)
sin(t) = y/t = 1/sqrt(5)
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Cheers,
Stan H.
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