How many obtuse angles are in a obtuse triangle?

one

step-by-step explanation:

common sense. don't worry though, even i tend to lack it. the reason why is because in the right triangle, there can only be one right angle. this is due to triangles being limited to three sides, and three angles. if you try to draw a triangle using any kind of angle, you will find that you can only have one angle separated from the others. this special angle determines the type of triangle.

answer: the angel abc is 30°,and the abc is a triangle where the angel bac is 90°

so ac is the half of 24=12ft,and from the pythagorean theorem we find ba

ba=√bc^2-ac^2=√576-144=√432=12√3ft

so bac is 12+12√3=12(1+√3)ft