Question

Choose the point on the terminal side of -210°.

Answer 1

Add in 360° I think.

Answer 2

Do you know what terminal side is?

Answer 3

My choices:
A. -1/1
B. -1/sqrt3
C. sqrt3/-1
D. -sqrt3/1

Answer 4

@MandyNeedsHelp , do you know how to graph this function? That will help you a lot.

Answer 5

I dont, im looking at my notes right now but its all confusing.

Answer 6

But do you know what a terminal side is?

Answer 7

The side that the measurement of an angle ends at

Answer 8

In all of my examples it gives me the terminal side, thats why im confused.

Answer 9

You're correct about the terminal side.
And you can use tangent to know the point, since the formula is tanx = y/x
So using tan(-210), you get what?

Answer 10

tan is opposite/adjacent but im not sure where i find that?

Answer 11

Yes that is also true, but in coordinate plane you can use the tan=y/x

Answer 12

I understand, but what is tan in this problem if im supposed to multiply it by -210

Answer 13

no, you get the tan of -210 to arrive at an answer.

Answer 14

Im sorry, im confused. Can you just give me the answer and how you got to it? I have other problems i can do on my own.

Answer 15

-1/sqrt3

Answer 16

When you graph it, it will also appear as 150 degrees. And with that you can use the reference angle of 30 degrees because it is 30 degrees near the x-axis. As we all know tan30 =1/sqt3 and since the graph is found in the 2nd quadrant, the x value is negative. That is why it became, -1/sqrt3

Answer 17

Thank you so much for explaining it, im starting to get a better understanding of this.