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Answer on Calculus Question for Waqas Ali

Question #2256
Sketch Cardioid: r = a(1-cosθ)
Please explain me its solution step by step with graph...?
Please tell me as soon as possible...?
Expert's answer
You can do it in polar coordinates, where θ is the angle and r is the radius.
At θ =0 r = a(1-cos0) =0
θ = 90& r = a(1-cos 90) = a
θ = 180 r = a (1- cos180) = 2a
θ = 270& r = a(1-cos 270) = a
For a= 1:
<img src="http:///" title="" alt=""><img src="../../..//assignments/uploaded_files/static/f8/9c/f89c8c8d728ef2cc1fff06b3a932e3a2.bmp" title="" alt="">

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