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Home > PC > Chapter 11 > Lesson 11.1.2 > Problem 11-23

11-23.

In the diagram at right, the point has Cartesian coordinates and polar coordinates .

  1. Explain why .

    Using the diagram, .

  2. Find in terms of and .

    Using the diagram, ?

  3. Find in terms of and .

    What theorem can be used to relate the three sides of a right triangle?

  4. Find θ in terms of and .

    Use tangent.