Latest exam Aptitude Question SOLUTION: Verify that each of the following is an identity: 1. csc(x)*sec(x) = cot(x)+tan(x) 3. cos(x)*cot(x)/sin(x) = csc(x)/sin(x)*sec^2(x) 4. csc^2(x)-cot^2(x)/sec^2(x) = c