Question

Use your grapher to determine which of the graphs matches the polar equation r = 4 cos 3θ.

I graphed it and mine didn't match any of the correct graphs. Could somebody help please?

Answer 1

@shrinifores

Answer 2

@uri

Answer 3

@UnkleRhaukus

Answer 4

@Mimi_x3 @ParthKohli

Answer 5

i think this is the one.

Answer 6

and by the way, x axis is (theta)

Answer 7

here are the graphs i'm given.

Answer 8

None of my graphs looked anything like these. I don't get which is the correct answer

Answer 9

what image are you getting when using your grapher ?

Answer 10

have you set it to polar coordinates?

Answer 11

this is what i got

Answer 12

that is
r= cos(3)θ


you want to graph

r= cos(3θ)

Answer 13

ohhh! Thank you so much!!!

Answer 14

Could you help me with one more?

Answer 15

sure.
ps, i like the shape of r= cos(3)θ better

Answer 16

Do i post it on here or make a new question? & haha me too

Answer 17

Find all polar coordinates of point P where P = (9, pi/5)