Trigonometry - Exact Trigonometric Values and the Unit Circle

Trigonometry - Exact Trigonometric Values and the Unit Circle

Given the basic angle, \(\alpha\), and the quadrant in which \(\theta\) lies, find the value of \(\theta\).

  1. \(70^\circ\), \(3^{rd}\) quadrant, \(-360^\circ < \theta < 0^\circ\)
  2. \(\frac{1}{3}\pi\), \(2^{nd}\) quadrant, \(-4\pi < \theta < -2\pi\)

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Answer:(a) -110 degrees. (b) -10pi/3.

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