Question

10 POINTS PLEASE HELP ASAP!!! What is the length of the altitude of the equilateral triangle below?

Answer 1

I think it would have to be letter E

Answer 2

Explanation:

Hey there!

Looking on figure we find that triangle ABC is a Right angled triangle.

Taking reference angle as C, we get;

Perpendicular (p) = a

Base(b) = 5

And hypotenuse (h)= 10

Now;

Using Pythagoras relation, we get;

`p = \sqrt{ {h}^(2) - {b}^(2) }`

Put all values.

`a = \sqrt{ {10}^(2) - {5}^(2) }`

`a = √(100 - 25)`

`a = √(75)`

`a = 5 √(3)`

Therefore, answer is Option E.

Hope it helps..