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Mathematics
Beatrice Kennedy
7 December, 07:32
Show that cos^2 330degrees=1
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Liam Galvan
7 December, 11:30
0
Actually it's not 1
330 in 4th quadratic is just 30 in 1st and cos is + ve
so you have
sqrt (3) / 2 ^2 = 3/4 = 0.75
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