Concept explainers
To find : the value of x in the figure
Answer to Problem 13CR
The value of x is
Explanation of Solution
Given Information: A right angled
Formula used:
In a right triangle, the cosine of the angle is the ratio of the adjacent side of the angle to the hypotenuse.
It can be expressed as,
Calculation: Consider the right triangle given below.
Here, with reference to the definition of cosine of an angle and for the given figure,
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