Question

what is the rule for a counter wingspanwise rotation about the origin of 240 degrees

Answer 1

LMAO

Answer 2

?

Answer 3

Are you talking about the transformation matrix used to rotate something by 240 degrees?

Answer 4

What is the rule for a counterclockwise rotation about the origin of 240°?
(x' , y') = (x sin 240° + y cos 240° , x cos 240° - y sin 240°)
(x' , y') = (x cos 240° - y sin 240° , x sin 240° + y cos 240°)
(x' , y') = (x sin 240° - y cos 240° , x sin 240° + y cos 240°)
(x' , y') = (x cos 240° + y sin 240° , x sin 240° - y cos 240°)

Answer 5

those r the options

Answer 6

Well think about it. Imagine you had a point (1,1), and wanted to rotate it about the origin 240 degrees counterclockwise. Where would the new point approximately be (which quadrant)?

Answer 7

hmm

Answer 8

i would need more than 1 point wouden't i?

Answer 9

Think of it as a vector, that might help you visually.

Answer 10

o

Answer 11

So according to this, where can you assume the new point will be?

Answer 12

OH SO it is counter-clockwise not counter wingspanwise

Answer 13

(-6,2) about

Answer 14

I'm assuming he meant counterclockwise

Answer 15

it is counter clockwise

Answer 16

We're sticking to the point (1,1), so the angle is a nice 45 degrees

Answer 17

woops ment (-2,-6)

Answer 18

The picture I drew isn't complete btw, I just wanted you to see my reasoning. The new arrow (-1,-1) is the 180 degree turn, so you need 60 more to be 240 degrees. The angle between that new arrow and the negative y axis is 45 degrees, so it will pass it. What quadrant is it in?