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Home > PC > Chapter 10 > Lesson 10.1.3 > Problem 10-39


Find r in component form if is the standard angle.

  1. and

    Draw each vector in a circle. Then make a right triangle with the -axis.

    Solve the rest of the triangle.
    Note: Each part forms a special right triangle.

  2. and

  3. and

Compute without a calculator