solomonzerubabel solomonzerubabel

11-12-2019
Mathematics

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An 8 foot long piece of 2 by 4 wood is used to prop up a fence if the 2 by 4 makes 30 degree angle with the ground how high above the ground is the point where the 2 by 4 contacts the fence

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kenlingdad kenlingdad

11-12-2019

Answer:

4

Step-by-step explanation:

H (height the 2x4 contact the fence)

sin 30° = H / 8

1 /2 = H / 8

H = 1/2 * 8 = 4

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