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sin²45⁰=(√2/2)²=½
cos 60⁰=½
czyli:½+½=1
więc sin²45⁰+cos60⁰=1
sin45°=√2/2
cos60°=1/2
(√2/2)²+1/2=2/4+1/2=1/2+1/2=1
sin²45° + cos60°=1
więc sin²45°=(√2/2)²=1/2
cos60°=1/2
sin²45° + cos60°=1/2+1/2=1