Երկրաչափություն
sin120=sin(180-60)sin60
120 * V3/2= 0.886
-c120 = sin(90+30)= sin30
-1/2= -0.5
tang 120 = V3/2/-1/2=-1V3
135= 180-45= 45
V2/2
cos135= 90+45 = 45
V2/2
tang = V2/2 / V2/2 = -1
150 sin = 180-30 = 1/2
cos 150 = 90+60 = 1/2
1/2/-1/2=-1
sin120=sin(180-60)sin60
120 * V3/2= 0.886
-c120 = sin(90+30)= sin30
-1/2= -0.5
tang 120 = V3/2/-1/2=-1V3
135= 180-45= 45
V2/2
cos135= 90+45 = 45
V2/2
tang = V2/2 / V2/2 = -1
150 sin = 180-30 = 1/2
cos 150 = 90+60 = 1/2
1/2/-1/2=-1