5. What is the value of x?

5

Step-by-step explanation:

in a 30-60-90 triangle the ratio of sides, respectively, is 1 : : 2

you can set up a proportion like this to solve for 'x':

/ 1 = 15 / x

cross-multiply:

x = 15

x = 15/

rationalize the denominator by multiply top and bottom by

you get 15 ÷ 3 which is 5

the answer is (-4,-4)

hope this ! : d