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Mathematics 15 Online
OpenStudy (anonymous):

I am doing a problem with parametric equations and polar coordinates. x=4cos(theta), y=5sin(theta), theta is between -pi/2 and pi/2.....I know my graph is a half circle but I need to find the y=mx+b like equation that will match the graph

OpenStudy (anonymous):

I am mostly stuck at the part where y=5sin(cos^-1(x/4)) from finding theta in the x=4costheta part.

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