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Home > A2C > Chapter 4 > Lesson 4.2.4 > Problem 4-126

4-126.

Use the Pythagorean Theorem.

x = ± 21

Use the positive side length.

See part (a).

You can use special triangles 30-60-90 and 45-45-90, or solve by using the Law of Sines.

x = 50 Remember to check your work.