SOLUTION: find tan(x-y) if sin(x)=8/17 and cos(y)=3/5 and x and y are both in the first quadrant. no decimals

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Question 544558: find tan(x-y) if sin(x)=8/17 and cos(y)=3/5 and x and y are both in the first quadrant. no decimals
Answer by KMST(5328) About Me  (Show Source):
You can put this solution on YOUR website!
The trigonometric ratios you were given are part of known Pythagorean triples, sets of 3 numbers that can be the lengths of the sides of a right triangle.
sin%28x%29=8%2F17->cos%28x%29=15%2F17tan%28x%29=8%2F15, cos%28y%29=3%2F5->sin%28x%29=4%2F5tan%28x%29=4%2F3
Then apply one of those formulas, like