### Home > A2C > Chapter 4 > Lesson 4.1.2 > Problem 4-30

4-30.

Solve for the indicated value. Leave your answer in exact form. Homework Help ✎

*x*= ____

*m∠**C*= ____

*m∠**B*= ____

*a*= ____

Use the Pythagorean Theorem.

Use the Pythagorean Theorem to find the missing side. Is the triangle a special one?

This is a 30-60 triangle. Therefore, ∠*C* is 30°.

The inverse tangent function will be helpful here.

Use the cosine ratio or special right triangles.