Question 511567
Find the amplitude, period, and phase of the function. 
Y=cos(pi/2 - x)
Form: y = a*cos(bx-c) + d
a = 1 ; b = -1 ; c = -pi/2 ; d = 0
-----
amplitude = |a| = 1
----
period = (2pi)/b = -2(pi)
----
phase = -c/a = pi/2
------------------
{{{graph(400,400,-10,10,-5,5,cos(3.14/2 - x))}}}
=========================
cheers,
Stan H.