Question

Use the diagram and cosine function to find the value of x.

Answer 1

`\\ \rm\Rrightarrow cosA=(Base)/(Hypotenuse)`

`\\ \rm\Rrightarrow cos58=(x)/(9.4)`

`\\ \rm\Rrightarrow x=9.4cos58`

Option D

Answer 2

D

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x=9.4cos(58°)

because the cosine function uses the ratio of the adjacent side to that of the hypotenuse.

9.4 is the hypotenus the ration is 58 degrees I believe