Since one of the angles is 45 degrees and the other one is a right angle, you have an isosceles right triangle, which is a special right triangle. The hypotenuse is the square root of 2 times one of the legs. One of the legs is x. The hypotenuse is 5. Using the information I stated earlier, we know that x√(2) = 5. Now we have an equation we can solve. x√(2) = 5 Divide both sides by √(2) x = 5 / √(2) Simplify x = (5 √(2) ) / 2 There's your answer. Have an awesome day! :)
