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19-05-2019
Mathematics

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Find the value of y. Cos 21=9/y

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shelbiiy shelbiiy

19-05-2019

y=9.64

—————

cos21=9/y

Cross Multiply

ycos21=9

Divide both sides by cos21 to isolate y

9/cos21 = 9.640304943

y=9.64

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