ashtonkile98
ashtonkile98 ashtonkile98
  • 01-05-2020
  • Mathematics
contestada

Find the value of x. Round to the nearest tenth
A. 4.6
B. 5.0
C. 7.8
D. 9.3

Find the value of x Round to the nearest tenth A 46 B 50 C 78 D 93 class=

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404nonexistent
404nonexistent 404nonexistent
  • 01-05-2020

Answer:

C. 7.8

Step-by-step explanation:

This problem involves the use of a trigonometric ratio. This one specifically involves the use of cosine as it provides the leg adjacent to the angle and the hypotenuse.

cos(40) = 6/x

cos(40)*x=6/x*x

cos(40)*x=6

cos(40)/cos(40)*x=6/cos(40)

x=6/cos(40)

x=7.83

The value of x is C. 7.8

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