Use the unit circle and the distance fomula to demonstrate that the coordinate of P(pi/6) = (sqrt.(3)/(2), 1/2).
i dont get how i have to apply the distance formula ???
Hello NeedHelp18 can be easily demonstrated by drawing a line of symmetry through an equilateral triangle, thus forming an angle of , while bisecting the base of the triangle.
Thus the y-coordinate of P . Then use the distance formula and the fact that the radius of the unit circle is to find the -coordinate.
...etc
Grandad