i think sin 200 is smaller than sin 0..
because sin 200= - sin 20..
sin 0 = 0
of course 0 > - sin 20
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sin(0) is 0
sin 0 = 0 cos 0 = 1
cos(125) = cos(180 - 55) = cos(180)*cos(55) + sin(180)*sin(55) = -cos(55) since cos(180) = -1, and sin(180) = 0 So A = 55 degrees.
sin(2*pi) - not pie - is the same as sin(0) = 0
sin(pi) = 0