PreCalc/Math
posted by Purplechick4 .
if (0,7) lies on the terminal side of angle theta in standard position, find each value sec(theta) , cot(theta) and sin(theta)

(0,0),(9,7).
x = 0, Y = 7.
r^2 = X^2 + Y^2,
r^2 = 0 + (7)^2 = 49,
r = 7.
secA = r/X = 7/0 = Infinite.
cotA = X/Y = 0 / 7 = 0.
sinA = Y/r = 7 / 7 = 1.