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What is sin 0 ?
0
What is sin ½ ?
π / 6
What is sin √2 / 2 ?
π / 4
What is sin √3 / 2 ?
π / 3
What is sin 1 ?
π / 2
What is cos 1 ?
0
What is cos √3 / 2 ?
π / 6
What is cos √2 / 2 ?
π / 4
What is cos ½ ?
π / 3
What is cos 0 ?
π / 2