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Anonymous
60 multiplied by 90 is 5,400.
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Yes, it will have the same answer: 5,400
2/3 x 90 = 60
Cos(90 - x) = sin(x) so cos2(90 - x) = sin2(x)
90 x 10 = 900
cos(60) = 0.57 x 60 x cos(60) = 7 x 30 = 210