In maths what is the formulae of a certain point on a unit circle?

Question

The (x,y) co-ordinates

Answer 1

x² + y² = 1

Answer 2

one million. resolve for the diameter of the circle by calculating the gap between the diameter endpoints given: d = squareroot[(5-one million)^2+(5-one million)^2] = squareroot (32). the middle of the circle may be the conventional of the coordinates: center is [(one million+5)/2, (one million+5)/2] = (3,3) 2. you're able to desire to complete the sq. for the x^2+4x part of the expression to get x^2+4x+4, so which you're able to desire to upload 4 to the two aspects to get x^2+4x+4+y^2 = 9+4 factoring: (x+2)^2 + y^2 = 13 center of circle at (-2,0) with radius of root 13

Answer 3

For a given point on the unit circle we have:

Unit Circle: x² + y² = 1

Point (x,y) on circle: (x,y) = (cosθ, sinθ)
where θ = angle from positive x-axis.

Answer 4

(cos x, sin x) gives a point on the unit circle for all x.