Question

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Answer 1

solve for x and y. Then plug it into the cos(x-y)

\[\sin(\theta)=\frac{ a }{ b }\]\[\theta=\sin^{-1}\frac{ a }{ b }\]

Answer 2

I just gave you a general formula for solving for x and y. theta represents x and y and a/b represents any fraction.

use your calculator and type in inverse sin of each fraction to solve for x and y.