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30 20 Y Find x Can someone please help me
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30
20
Y
Find x

Can someone please help me

30 20 Y Find x Can someone please help me-example-1
User Tammoi
by
4.3k points

1 Answer

1 vote

Answer:

B

Explanation:

Using the cosine ratio in the right triangle and the exact value

cos30° =
(√(3) )/(2) , then

cos30° =
(adjacent)/(hypotenuse) =
(x)/(20) =
(√(3) )/(2) ( cross- multiply )

2x = 20
√(3) ( divide both sides by 2 )

x = 10
√(3) → B

User Prasad Jadhav
by
5.3k points
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