Question

Question #9c80e

Answer 1

`sqrt(3)/2`

Explanation:

For a `30^@-60^@-90^@`triangle, the angles are in the ratio: `1: sqrt(3): 2`.

`120^@` is in the second quadrant. Sine is positive in this quadrant. Using `soh, sin theta = "opposite"/"hypotenuse" = sqrt(3)/2`.