27-04-2017
Mathematics

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if sin θ = 0.55 what is the value of cos θ? How do I solve this?

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27-04-2017

0.55^2 + cos^2 = 1
cos^2 = 1 - 0.55^2
cos^2 = 1 - 0.3025
cos^2 = 0.6975
cos = 0.8351

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