SOLUTION: use identities to write each expression as a function of theta cos(theta + pi/2)

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Question 851920: use identities to write each expression as a function of theta
cos(theta + pi/2)
Answer by lwsshak3(11628) About Me  (Show Source):
You can put this solution on YOUR website!
use identities to write each expression as a function of theta
cos(theta + pi/2)
use x for theta:
Identity: cos(x+π/2)=cosx*cos(π/2)-sinx*sin(π/2)=cosx*0-sinx*1=-sinx