## anonymous one year ago Need help please! The height of the equilateral triangle below is 15 units. What is the value of x? a) 15 sqrt 3 b)30 sqrt 3 c)15/sqrt 3 d)30/sqrt 3

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1. anonymous

2. freckles

have you tried using Pythagorean theorem

3. freckles

|dw:1436305476960:dw|

4. anonymous

the a square plus b square equals c square? @freckles

5. freckles

yes

6. freckles

$(15)^2+(\frac{x}{2})^2=x^2$