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Find x. 30 20 Need help with this question asap
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5 votes
Find x.
30
20
Need help with this question asap

Find x. 30 20 Need help with this question asap-example-1
User Mwoelk
by
8.0k points

2 Answers

5 votes
Cos=adjacent/hypotenuse
Cos30=x/20
x=cos30 *20

Sorry I don’t have a calculator right now
User JeniT
by
8.8k points
2 votes

Answer:

x = 10
√(3)

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)

User Kdmurray
by
8.2k points
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