What is the value of x in the triangle?

Round your final answer to the nearest hundredth.





Guest Mar 19, 2018

This is a right triangle, and we know the length of the hypotenuse, and we want to find the length of the side adjacent to the  18° angle.


cos(an angle)  =  length of side adjacent / length of hypotenuse


cos 18°   =   x / 25            Now multiply both sides of this equation by  25 .


25 cos 18°   =   x


x   =   25 cos 18°              Plug this into a calculator to get...


x   ≈   23.78        cm

hectictar  Mar 19, 2018

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