Question

Find the length of the altitude in an equilateral triangle with a side length of 18.

Answer 1

Have you tried drawing it?
A drawing often helps.

Answer 2

it's a 30-60-90 triangle

Answer 3

altitude being the hypotenuse it's 18 root 3

Answer 4

so would it be 9 to the square root of 3?

Answer 5

oh yes sry my bad

Answer 6

Your ok Thanks!

Answer 7

thanks mate :D

Answer 8

so is that the answer cuz it wasn't one of my 4 multiple choices.

Answer 9

You stated above that the answer was "9 to the square root of 3."
I think you meant "9 times the square root 3", which is correct and is the same as my answer.
It's clearer below:
\(9\sqrt{3} \)

Answer 10

\[h=18 \text{ Sin}[60{}^{\circ}]=9 \sqrt{3}=15.59 \]

Answer 11

OK