Question

6)
find the missing side. round to the nearest tenth.
9.6
9.5
9.4
9.3

Explanation:

Step1: Identify sides/angle

Right triangle: hypotenuse=18, angle=58°, x=adjacent side.

Step2: Use cosine formula

$\cos(58^\circ)=\frac{x}{18}$

Step3: Solve for x

$x=18\times\cos(58^\circ)$

Step4: Calculate value

$\cos(58^\circ)\approx0.5299$, $x\approx18\times0.5299\approx9.5382\approx9.5$

Answer:

9.5