definitions you need to know ...
the ray where intersects the unit circle at the coordinates (1,0), i.e. , x = 1 and y = 0.
substitute the values of each coordinate into the definitions ... what do you get?
Hi, is it possible for someone to explain to me why the sin, cos and tan of 0 degrees is 0, 1 and 0 degrees respectively. I am a visual learner, and i just can't get my head around the concept.
Inaddition i would also like to understand why the sin cos and tan of 90 degrees is 1 degree, 0 and undefined.
Thanks in advance, =]