The point P is on the unit circle. The standard angle associated with P is 60°. What is...

Question

The point P is on the unit circle. The standard angle associated with P is 60°. What is the x-coordinate of P?

Answer 1

Hello Michael,

 

What you need to do is find the tangent of the angle,

 

tan 60° = y/x

 

sqrt(3)  = y/x  written in s different way

 

y/x = sqrt(3)/1  which gives  y = sqrt(3), and x = 1

Answer 2

P = (cos60°, sin60°) = (1/2, √3/2)