Question

What is the length of the altitude of the equilateral triangle below?
http://media.apexlearning.com/Images/200705/25/4b4ea6ee-9af9-4726-ad2d-941e8173ceb6.gif

Answer 1

Use sine..

\(\sf sine = \dfrac{Opposite}{Hypotenuse}\)

In this case:

\(\sf sin(60^o) = \dfrac{a}{10}\)

Find sin 60 degrees:

\(\sf 0.866025404 = \dfrac{a}{10}\)

Multiply 10 to both sides, what's 10 * 0.866025404?

Answer 2

@little_meme16

Answer 3

ok thank you

Answer 4

No problem, just multiply that and that will be your answer.

Answer 5

I got 8.66025404

Answer 6

But the answer choices are
A. 50
B. 10
C. 10 (sq rt 3)
D. 5
E. 1
F. 5 (sq rt 3)

Answer 7

F. 5 (sq rt 3)

Answer 8

Correct