png 120 120 hw2trig.png color 1 0 0 xyz -0.6 -0.5 0.5 color 1 1 0 xyz 0.5 -0.4 1.0 color 1 0 1 xyz 0.5 0.5 0.0 trig 1 2 3 color 0 1 1 xyz -0.9 0.0 0.9 color 0 1 0 xyz 0.0 -1 0.5 color 0 0 1 xyz 0.2 0.7 0.1 trig 4 5 6