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Find the degree of the missing angle and round to the nearest whole degree

Find the degree of the missing angle and round to the nearest whole degree-example-1
User Kim Major
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1 Answer

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We are asked to determine the value of the angle. To do that we will use the function cosine, since this is defined as:


\cos \theta=(adjacent)/(hypotenuse)

Replacing the values:


\cos \theta=(12)/(13)

Now we use the inverse function of cosine to get the angle:


\theta=\cos ^(-1)((12)/(13))

Solving the operation:


\theta=22.62

Therefore, the angle is 23 degrees approximately.

User Adam Zarn
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