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11-46.
  1. Without using a calculator, write two solutions to each of the following equations for 0º ≤ θ < 360º. Homework Help ✎

    1. sin(θ) =

    2. tan(θ) =

    3. cos(θ) =

    4. sin(θ) = −

One answer is θ = 30°

Tangent is positive in quadrants I and III.

θ = 30°, 330°

Sine is negative in quadrants III and IV.