Mathematics, 12.07.2019 18:40 georgesarkes12
Iwant to test for symmetry when theta=pi-=4cos 2theta
Answers: 1
![\bf \textit{symmetry test with respect to the }\theta =\frac{\pi }{2}~line \\\\\\ r=4cos(2\theta )\implies r=4cos[2(\pi -\theta )]\implies r=4cos(2\pi -2\theta )\\\\ -------------------------------](/tpl/images/0081/9235/045b2.png)
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