isaiah447p
Answered

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Solve for x. Round to the nearest tenth, if necessary.​

Solve For X Round To The Nearest Tenth If Necessary class=

Sagot :

bhadelsimron19

Answer:

Step-by-step explanation:

take 60 degree as reference angle

using cos rule

cos 60=adjacent/hypotenuse

1/2=80/x(do cross multiplication)

80*2=x

160=x

Answer:

x = 160

Step-by-step explanation:

Using the cosine ratio in the right triangle

cos60° = [tex]\frac{adjacent}{hypotenuse}[/tex] = [tex]\frac{CD}{CE}[/tex] = [tex]\frac{80}{x}[/tex] ( multiply both sides by x )

x × cos60° = 80 ( divide both sides by cos60° )

x = [tex]\frac{80}{cos60}[/tex] = 160

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