Find the missing length of the triangle.
26 in.
a
24 in.

Work Shown:
Apply the pythagorean theorem to get...
a^2 + b^2 = c^2
a^2 + 24^2 = 26^2
a^2 + 576 = 676
a^2 = 676 - 576
a^2 = 100
a = sqrt(100)
a = 10