r^2 - x^2+y^2 = 5^2+(-12)^2 = 169
r = 13.
sin A = y/r = -12/13
A = -67.4o.
If θ is an angle in standard position and its terminal side passes through the point (5,-12), find the exact value of
sin
θ
sinθ in simplest radical form.
1 answer