trig
posted by patrick .
(a) sketch an angle A in standard position whose terminal ray passses through the point (1,4)
(b) Find the exact value of the six trigonometric functions of A,
(c) Let B be the reference angle of A. Find a point on the terminal rsy of B in standard position and add B to your sketch.

construct your rightangled triangle by drawing a perpendicular to the xaxis from (1,4)
then r^2 = x^2 + y^2 = 1 + 16
r = √17
b)
sinA = 4/√17
cscA = √17/4
cosA = 1/√17
secA = √17
tanA = 4/1 = 4
cotA = 1/4