2 years ago

Solve for x. Round to the nearest tenth. Help

Mathematics

2 answers:

LekaFEV [45]2 years ago

8 0

Answer:

Step-by-step explanation:

cosθ = adjacent / hypotenuse

cos(26) = 18 / x

x= 18 / cos(26)

x= 27.82418 ≈ 20 (to nearest tenth)

Mrac [35]2 years ago

3 0

Answer:

x ≈ 20

Step-by-step explanation:

Using the cosine ratio in the right triangle

cos26° = $\frac{adjacent}{hypotenuse}$ = $\frac{18}{x}$ ( multiply both sides by x )

x × cos26° = 18 ( divide both sides by cos26° )

x = $\frac{18}{cos26}$ ≈ 20.0 ( to the nearest tenth )

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