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X 39° Find the value of x to the nearest tenth.

User Yoro
by
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1 Answer

5 votes

Solution

For this case we have a right triangle

The angle given is 39º

The adjacent side = 7

And we want to find the value of the hypothenuse x, we can use the following identity:


\text{cos}39=(7)/(x)

Solving for x we have:


x=(7)/(\cos 39)=9.007

The answer rounded to the nearest tenth would be:

9.0

User Downgoat
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5.7k points