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What is the value of X in the given triangle?

What is the value of X in the given triangle?-example-1

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Answer: x = 65.4

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Work Shown:

cos(angle) = adjacent/hypotenuse

cos(x) = 5/12

x = arccos(5/12)

x = 65.375681647836 which is approximate

x = 65.4 after rounding to one decimal place

Make sure your calculator is in degree mode. The arccosine function is the same as the inverse cosine function (shortened to
\cos^(-1) ).

User Jermyn
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