emmagrace232 emmagrace232

06-01-2017
Mathematics

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What is the length of the altitude of the equilateral triangle below

What is the length of the altitude of the equilateral triangle below class=

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olemakpadu olemakpadu

06-01-2017

Using Sine.

Sine = Opposite / Hypotenuse

sin 60° = a / (6√3) But sin60° = √3/2

√3/2 = a/(6√3)

Cross multiply

2*a = 6√3 * √3

2a = 6 * √(3*3)

2a = 6*3

a = 6*3/2

a = 3*3 = 9

Option E.

Hope this helps.

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15-12-2020

Answer:

The answer is E. 9

Step-by-step explanation:

Answer Link

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