In right triangle ABC, ∠B is the right angle and m∠C = 30°. If AC = 10, what is AB?

Answer:
A) 5 units
Step-by-step explanation:
ABC is a 30-69-90 degree triangle whose sides, respectively, are in the ratio of 1 : [tex]\sqrt{3}[/tex] : 2
so if the hypotenuse is 10, the side opposite the 30° angle is half of that, or 5