For an angle Θ with the point (16, −30) on its terminating side, what is the value of cosine?

For an angle Θ with the point (16, −30) on its terminating side, what is the value of cosine?

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\(16\) over the hypotenuse of the triangle with one side \(16\) and the other \(30\)

i.e. \[\frac{16}{\sqrt{16^2+30^2}}\] as a start

You need to solve for c. a2+b2=c2

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