Numerator = sin(10)*cos(10)*tan(10)*sec(10)*csc(10)*cot(10)) = (sin(10)*csc(10)) * (cos(10)*sec(10)) * (tan(10)*cot(10)) = 1 * 1 * 1 = 1. Denominator = sin(20)*cos(20)*tan(20)*sec(20)*csc(20)*cot(20)) = (sin(20)*csc(20)) * (cos(20)*sec(20)) * (tan(20)*cot(20)) = 1 * 1 * 1 = 1. Then the simplified numerical value is= = 1.