SOLUTION: 31) If tan theta= 0.75, and 0 to 90 deg, evaluate sin theta; and cos theta.

Algebra ->  Trigonometry-basics -> SOLUTION: 31) If tan theta= 0.75, and 0 to 90 deg, evaluate sin theta; and cos theta.      Log On


   

Question 759107: 31) If tan theta= 0.75, and 0 to 90 deg, evaluate sin theta; and cos theta.
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
If tan theta= 0.75, and 0 to 90 deg, evaluate sin theta; and cos theta.
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tan(x) = y/x = 3/4 in QI where x and y are both positive.
So y = 3 and x = 4
Therefor r = sqrt[3^2+4^2] = 5
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sin = y/r = 3/5
cos = x/r = 4/5
tan = y/x = 3/4
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csc = 5/3
sec = 5/4
cot = 4/3
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Cheers,
Stan H.
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