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Eric Truett · Answer 1 · 2023-11-30T23:30:13+0000

Cosine formula

$\cos (angle)=\frac{\text{ adjacent side}}{\text{ hypotenuse}}$

Considering the angle of 70°, the adjacent side has a length of x units, and the hypotenuse has a length of 5 units. Substituting this information into the formula and solving for x:

$\begin{gathered} \cos (70\degree)=(x)/(5) \\ \cos (70\degree)\cdot5=x \\ 1.7\approx x \end{gathered}$

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