Trigonometry - Exact Trigonometric Values and the Unit Circle

Trigonometry - Exact Trigonometric Values and the Unit Circle

TGM Original Questions

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

  1. \(\alpha = 30^{\circ}\), \(\theta\) is in the \(4^{\text{th}}\) quadrant, \(180^{\circ} < \theta < 540^{\circ}\).
  2. \(\alpha = 17^{\circ}\), \(\theta\) is in the \(2^{\text{nd}}\) quadrant, \(-720^{\circ} < \theta < -360^{\circ}\).
  3. \(\alpha = \frac{\pi}{4}\), \(\theta\) is in the \(3^{\text{rd}}\) quadrant, \(-2\pi < \theta < 0\).
  4. \(\alpha = \frac{2\pi}{5}\), \(\theta\) is in the \(1^{\text{st}}\) quadrant, \(3\pi < \theta < 5\pi\).

Video Solution:

Video Solution

Video solution locked

A free account saves your progress; this video needs a course plan.

Solution:

Solution locked

680+ questions here come with free worked solutions. A free account saves your questions and progress; this one needs a course plan.

Answer:(i) \(330^\circ\). (ii) \(-557^\circ\). (iii) \(-\dfrac{3\pi}{4}\). (iv) \(\dfrac{22\pi}{5}\).

Need help? Join our A-Maths tuition classes.

Learn more