(sin^2x-sin^2y)l(cos^2x-sin^2y) = tan (x+y)/cot (x-y)

13.33%

say 50 oranges, then 100 apples

80 are red, 20 are yellow

total fruit = 150

20chances out of 150 for yellow

20/150 = 13.33%

yes the total will be same because in both of them the expression.is rearranged but their sign remains the same hence it hss just been shuffled