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

4-30.
  1. Solve for the indicated value. Leave your answer in exact form. Homework Help ✎

    1. x = ____
      diagram

    2. m∠ C = ____
      diagram

    3. m∠ B = ____
      diagram

    4. a = ____
      diagram

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.