SOLUTION: find the value of sin(a-b) if cos a = 15/17, cot = 24/7, 0 degrees <a <90 degrees, and 0 degrees < b < 90 degrees

Algebra ->  Trigonometry-basics -> SOLUTION: find the value of sin(a-b) if cos a = 15/17, cot = 24/7, 0 degrees <a <90 degrees, and 0 degrees < b < 90 degrees      Log On


   



Question 834849: find the value of sin(a-b) if cos a = 15/17, cot = 24/7, 0 degrees
Answer by
stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
find the value of sin(a-b) if cos(a) = 15/17, cot(a) = 24/7, 0 degrees < b < 90
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angle "a" is in QI where x and y are positive.
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Since cos = x/r, x = 15 and r = 17
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Therefore: y = sqrt[17^2-15^2] = 8
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Question:: What else do we know about "b"?
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Cheers,
Stan H.
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