Polar equations - Help?
posted by Tabby .
i need to graph the polar equation
2 = r cos (theta + 180) on one of the graphs that looks like a flattened globe.
So far I have
2=r cos180 costheta + r sin180 sintheta
what do i do now?
Isn't cos(Theta+180)= -cosTheta ?
checking the hard way...
cos(Theta+180)= cosThetacos180-sinThetasin180= -cosTheta.
thank you so much, I don't know how i missed that identity.