Your Answer is

Correct Answer is G

Explanation

The G option is opposite to the value of sinx

The sine function is symmetrical about the center of the origin, so sin (-x^o)=-sin x^o , so F is right and G is wrong.

The cosine function is symmetrical about the y axis, so cos x^o=cos (-x^o), so cos(90-x) ^o=cos(x-90)^o, H=J

Because 0≤x≤90, in a right triangle, sin x^o =cos (90-x)^o，(sin x^o)² + (cos x^o sup>)²=1, H, J, K are all equal to sin x^o.