Question

Find x in this 45°-45°-90° triangle.
X
45
X=
12
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Answer 1

6√2

Explanation:

Use trigonometry:

`\cos(45∘) = (x)/(12)`

Use the property of the proportion to find x:

`x = 12 * \cos(45∘) = 12 * ( √(2) )/(2) = 6 √(2)`