Question

Why do sin(0) = 0 and cos(0) = 1?

Answer 1

sin (0) is 0

Answer 2

Do you just memorize that because its a given?

Answer 3

hmm hmm yea kinda

Answer 4

yep...sin (pi) is 0

Answer 5

I mean it is a function ... ratio of triangle's side so it's not just given

Answer 6

right triangle*

Answer 7

oh, i get it. thanks guys.

Answer 8

rename y axis as sin axis; and x axis as cos axis

Answer 9

as you follow around the circle, as the angles go from 0 to whatever we can read the sin and cos values off the circle