## anonymous one year ago Thanks for helping! Help with symmetries! Identify, graph, and state the symmetries of each polar equation. Write the scale that you are using for the polar axis. r=9cos(5 theta)

1. anonymous

@Hero @jim_thompson5910 @phi @zepdrix @SithsAndGiggles @wio @sleepyjess @Data_LG2

2. anonymous

3. anonymous

I can't figure out the symmetries though

4. anonymous

|dw:1434247686398:dw| You can check if its symmetry by putting in $$-\theta$$ in $$\theta$$ $$r=9cos(5\theta)$$ Replacing it, $$r=9cos(5(-\theta))$$ $$r=9cos(-5\theta)$$ Can be written as $$9cos(5\theta)=r$$ Which means this equation is symmetrical

5. anonymous

Thanks for the explanation, but it asks me to say whether is has symmetries, such as symmetry about the polar axis, etc. I know that it does for the polar axis, but need help with the others

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