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Sun 15 May, 2005 07:39 am
I'm a GCSE student studying Maths at Higher Level, but I'm having problems with trigonometry. I just can't understand it, no matter what anyone tells me. Can someone please just explain the basics of trigonometry to me in simple terms that I can understand?
Thanx.
That cos(x)*cos(x)+sin(x)*sin(x)=1 means that
u=cos(x)
w=sin(x)
determine the Cartesian coordinate (u, w) of a point P on the unit circle u*u+w*w=1. In this case x is the length of the arc from O(0,0) to P(u,w) along the circle (the unit is called "radian").
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