+509 The terminal side of θ pases through points (8, -7)
What is the exact value of cos θ in simplified form?
a. 8√113 / 113
b. - 7√113 / 113
c. 7√113 / 113
d. - 8√113 / 113
+36916 Hypotenuse of the angle = sqrt (8^2 + (-7)^2) = sqrt(113)
sin is opp/hyp = -7/sqrt113
cos = adj/hyp = 8/sqrt(113) multiply numerator and denom by sqrt(113) to get 8 * sqrt(113) / 113
+36916 Hypotenuse of the angle = sqrt (8^2 + (-7)^2) = sqrt(113)
sin is opp/hyp = -7/sqrt113
cos = adj/hyp = 8/sqrt(113) multiply numerator and denom by sqrt(113) to get 8 * sqrt(113) / 113
