Answer:
The answer to your question is: length = 10.4 units
Explanation:
Data
It's a right triangle with angles 30°- 60°- 90°
I'll solve this exercise with the function sine and cosine
a) sin 60 = long leg / hypotenuse
long leg = hypotenuse x sin 60
long leg = 12 x 0.87
lon leg = 10.4 units
b) cos 30 = long leg / hypotenuse
long leg = hypotenuse x cos 30
long leg = 12 x 0.87
long leg = 10.4 units