Answer to Question #34267 in Algebra for jeff

Question

suppose cosx = -7/25 and tanY=15/8, where x is in the II quadrant and Y in the III Quadrant without calculator find the exact values of
a) sin(x-y); b) cos(x-y) c) tan(x-y)

2) prove that sqartroot 17 is irrational using the well ordering properties of the natural numbers

Answer 1

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