Question

What is the value of x?

Option A: 2
Option B: 4
Option C: 2 square root 2
Option D: 4 square root 2

Answer 1

This is a special triangle composed of 2 equal angle and a 90 degree angle

Answer 2

So we know that the other 2 angles must be 45 degrees so we have a 45 45 90 special right triangle and the relationship for the sides of this type of triangle will be that the 2 smaller sides will be equal and the larger side will be the smaller side multiplied by the square root of 2 so we have: