Question

Please help me yea you

Answer 1

`x=31.8`

Explanation:

Use the trigonometry ratios to find x. The cosine ratio is used when you are given the side adjacent to the angle and the hypotenuse (the hypotenuse is never considered the adjacent side):

`cosineX=(adjacent)/(hypotenuse)`

Insert the values:

`cos51=(20)/(x)`

Solve for x. Multiply both sides by x:

`x(cos51)=x((20)/(x))\\\\x*cos51=20`

Isolate the variable. Divide both sides by cos51:

`(x*cos51)/(cos51) =(20)/(cos51) \\\\x=(20)/(cos51) \\\\`

Insert the value into a calculator to be simplified:

`x=31.78`

Round to the nearest tenth:

`x=31.8`

:Done