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    How would I draw r=acos(theta)
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    Plot a few values, what does it look like?

    To actually find the Cartesian version
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    Multiply by r
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    pretend the intial line is the positive x axis (0 rads) the positive y axis is pi/2 rads the negative x axis is pi rads etc.
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    (Original post by SimonM)
    Plot a few values, what does it look like?

    To actually find the Cartesian version
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    Multiply by r
    Does the value of r act the same as x values, i.e. as r increases does it move to the right on the initial line?
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    (Original post by vinsta)
    Does the value of r act the same as x values, i.e. as r increases does it move to the right on the initial line?
    r^2 = x^2+y^2
    r\cos \theta = x
    r\sin \theta = y
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    (Original post by SimonM)
    r^2 = x^2+y^2
    r\cos \theta = x
    r\sin \theta = y
    So, it acts as a diagonal then.
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    (Original post by vinsta)
    So, it acts as a diagonal then.
    r is the distance from the origin, \theta is the angle to the initial line (the x-axis for you)
 
 
 
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