Question

Which CANNOT be the lengths of a 30-60-90 degree triangle and why?
a. 7/3, 14/3, 7/3, radical 3
b.11, 22, 11, radical 3
c. 4, 8, 4, radical 3
d. 10, 5, 10, radical 3

Answer 1

A 30-60-90 has sides of a, 2a, a * rad3
d. cannot be 30 60 90 because it has a, 2a, 2a *rad3

Answer 2

what does 'a' stand for?

Answer 3

or is it just a variable?

Answer 4

variable

Answer 5

It is a constant variable regarding the length of a side.
opposite and angle.

Answer 6

alright, thank you guys very much!

Answer 7

since you have a right triangle, you can see if a^2+b^2=c^2 holds