How do you find the value of #cos ((pi)/2)# using the graph? Trigonometry Graphing Trigonometric Functions Translating Sine and Cosine Functions 1 Answer Tony B Feb 12, 2016 #180^o" is "pi" radians. So "pi/2" is "90^o# #cos(pi/2)" "->" "(x,y)" "->" "(pi/2,0)# Explanation: The #cos(x)""# is the value you read off from the y axis Answer link Related questions How do you graph sine and cosine functions when it is translated? How do you graph #y=sin ( x -frac{\pi}{2} )#? How do you draw a sketch of #y = 1 + cos (x - pi)# How do you shift and graph #y=-3+sinx#? How do you graph #y=3sin(1/3x+ pi/2)-2#? How do you graph #1/2sin(x-pi)#? How do you graph #-sinx+2#? How do you graph #y=3sin(1/2)x#? How do you graph #y=-2cos((pix)/3)#? How do you graph #y = (1/2)sin(x - pi)#? See all questions in Translating Sine and Cosine Functions Impact of this question 5985 views around the world You can reuse this answer Creative Commons License