Which set of polar coordinates are plotted in the graph below?

Question

kj4uts · Answer

attachment

kj4uts · Answer

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kj4uts · Answer

The point looks to be at (1, -2) and according to the chart above it looks like the answer would be 5pi/3 or choice A.?

kj4uts · Answer

How would I solve this without using a graph?

kj4uts · Answer

How would I solve this without using a graph? Is this graph even right?

jhannybean · Answer

Polar coordinates are defined by $(r~,~ \theta)$ right?

kj4uts · Answer

yeah

jhannybean · Answer

You can think of it as quadrants, and then see which radian measurement falls in Q4, either clockwise or counterclockwise

kj4uts · Answer

oh ok

jhannybean · Answer

So let's start with the coterminal angle in Q1. what is the radian measure of an angle of $30^\circ$?

kj4uts · Answer

30 degrees is 0.52359878 radians

jhannybean · Answer

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jhannybean · Answer

label them all.

jhannybean · Answer

And i want it in radian measure, not decimal form.

kj4uts · Answer

the middle lines in between are 45 degrees right?

jhannybean · Answer

You have 3 choices for $30^\circ$ in Q1, $\dfrac{\pi}{3}~,~ \dfrac{\pi}{4}~,~ \dfrac{\pi}{6}$

jhannybean · Answer

middle lines?

jhannybean · Answer

Before understanding polar coordinates you HAVE to know your unit circle. CW, and CCW.

kj4uts · Answer

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