SOLUTION: The leg of a right triangle is 4 units and the hypotenuse is 9 units. What is the length, in units, of the other leg of the triangle?

Algebra ->  Triangles -> SOLUTION: The leg of a right triangle is 4 units and the hypotenuse is 9 units. What is the length, in units, of the other leg of the triangle?      Log On


   

Question 953638: The leg of a right triangle is 4 units and the hypotenuse is 9 units. What is the length, in units, of the other leg of the triangle?
Answer by MathLover1(20850) About Me  (Show Source):
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if the leg a of a right triangle is 4 units and the hypotenuse c is 9 units, to find the length, in units, of the other leg b of the triangle use Pythagorean theorem
c%5E2=a%5E2%2Bb%5E2
9%5E2=4%5E2%2Bb%5E2
81=16%2Bb%5E2
81-16=b%5E2
65=b%5E2
b=sqrt%2865%29
b=8.06 units