By how much is 25% of #25 greater than 15% of #15

Based on the diagram, match the trigonometric ratios with the corresponding ratios of the sides of the triangle. tiles : cosb sinb tanb sincposs matches: c/b b/a b/c c/a

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).

According to the general equation for conditional probability if p(anb)=3/7 and p(b)=7/8 what is p(a i b)