This is the the concept of trigonometry, to get the sine value of the the function given we shall proceed as follows; Using Pythagorean theorem, the hypotenuse of the triangle will be found as follows; The side length will be 8 units since the y-coordinate is -8 The side width will be 3 units since the x- coordinate is 3 c^2=a^2+b^2 c^2=(3)^2+(-8)^2 c^2=9+64 c^2=73 c=sqrt(73)
Therefore the sine value will be: sin x=3/sqrt(73) multiply both numerator and denominator by sqrt(73) we get: sin x=(3√73)/73
