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 ???

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- Mar 23rd 2009, 05:04 PMNeedHelp18Unit Circle Help
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 ??? - Mar 24th 2009, 12:24 AMGrandadTrig Ratios
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