Posted by Purplechick4 on Tuesday, February 7, 2012 at 12:03am.
if (0,7) lies on the terminal side of angle theta in standard position, find each value sec(theta) , cot(theta) and sin(theta)

PreCalc/Math  Henry, Wednesday, February 8, 2012 at 3:35pm
(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.