Question

Given right triangle ABC with measure of <C = 90°, b=20 and c = 30 find a

Answer 1

c is the hypotenuse of the triangle

so c^2 = a^2 + b^2

30^2 = a^2 + 20^2
a^2 = 30^2 - 20^2 =500

a = sqrt500 = 22.36 to nearest hundredth