Note: the legs
need not be a length of 1 for these patterns to apply. 45º45º90º
(Isosceles Right Triangle)
The nice thing about mathematics is that there is always another way to do the problem. If you forget these formulas, you could always use the Pythagorean Theorem or a trigonometric formula. Let's look at 3 solutions to this problem where you are asked to find x:
