Question

What's the value? (yelping for help)

Answer 1

Answer: cos 20

Explanation:

Answer 2

cos(20°) is the correct answer.

Congratulations! This is the unit circle. Literally everyone hates this. Everyone takes this in Trigonometry though, and it's required. I literally failed Trigonometry because of this and had to retake it when getting my degree in Mathematics.

So, what is the x-coordinate of this? Well, for any angle or (angle in triangle)
`\alpha`, the coordinates are always (
`cos(\alpha), sin(\alpha)`).

In this case, angle
`\alpha` is 20°, and so the x-coordinate will be cos(20°) while the y-coordinate will be sin(20°).

Hope this helped!