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Home > PC3 > Chapter 11 > Lesson 11.2.4 > Problem 11-131

11-131.

COMPLEX NUMBERS: STANDARD POLAR

  1. Rewrite the following complex number in polar form:

    Graph the point . Then create a right triangle with the x-axis.
    The hypotenuse of the triangle is the radius. Use the tangent ratio to determine the angle.

  2. Rewrite the following complex number in standard form: ))

    Use the half-angle identity for cosine or a calculator to compute .