Question

Find the measure of x.
X
55°
80
X
= [ ?
]
Round to the nearest tenth.

Answer 1

Answer:  139.5

Work Shown:

cos(angle) = adjacent/hypotenuse

cos(55) = 80/x

x*cos(55) = 80

x = 80/cos(55)

x = 139.4757 approximately

x = 139.5

Answer 2

Answer:

x= 139.5

Step-by-step explanation:

adj/hyp =cos55

80/hyp =cos55

hyp= 139.5

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