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20. Find the missing side. Round to the nearest tenth.

20. Find the missing side. Round to the nearest tenth.-example-1

1 Answer

9 votes

Answer:

A

Explanation:

Note

One thing you should automatically notice is that x is larger, much larger than 20. x is the hypotenuse of a right triangle

Formula

Sin(18) = opposite side / hypotenuse

Givens

Sin(18) = 0.30902

opposite = 20

hypotenuse = x

Solution

sin(18) = 20 / x Multiply both sides by x

x sin(18) = 20*x /x

x sin(18) = 20 Divide by sin(18)

x sin(18) / sin18 = 20/sin(18)

x = 20 / 0.30902

answer: x = 64.72

User Adeel Turk
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