How to write sin^2 in calculator
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You can factor it into (sin-1/2) (sin-1/2)=0, which means sin=1/2. So you know sin but you need cos. You can dig out your calculator, or use the rule that sin 2 + cos 2 = 1. So it's (1/2) 2 + cos 2 = 1 cos 2 = 1-1/4 cos=sqrt (3/4) cos= (sqrt3)/2
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