Triangle ABC: A = 100, B = 79, C = ?

Answer 1

When given a triangle and two of the three side lengths, this often means using the Pythagorean Theorem to solve for the unknown value.

Pythagorean Theorem: A² + B² = C²

If A = 100, B = 79, and C =?, then we plug in the values for A and B, so we can solve for C.

(100)² + (79)² = C²

Square the values, combine like terms, and then take the square root of both sides in order to solve for

C.