Question

how do I find the exact value of cos 150 degrees and sin 150 degrees?

Answer 1

Have you ever used a unit circle before?

Answer 2

yeah

Answer 3

So on a coordinate point, (x, y), x is your cos value and y is your sin value

Answer 4

What is the coordinate at 150% on a unit circle?

Answer 5

150 degrees?

Answer 6

Yes, sorry, degrees not percent lol

Answer 7

5pi/6

Answer 8

is it -3/2, 1/2?

Answer 9

The coordinate, not the radians. -sqrt3/2, 1/2, yup

Answer 10

So, if x is the cos and y is the sin, what is the value for sin150 and cos150?

Answer 11

so its -3/2, 1/2

Answer 12

sqrt of sorry

Answer 13

sqrt of 3*

Answer 14

Well, kind of. That's the coordinate. (Don't forget the square root on that -3.)

The exact value for cos150 will be -sqrt3/2
The exact value for sin150 will be 1/2

Answer 15

kay thank you!!! (:

Answer 16

Understand why that is and everything?

Answer 17

yeah I just forgot to put the sqrt

Answer 18

No worries, good luck!