Electrical mathQuestion 485 of 1506

What decides which side of a right triangle is called adjacent or opposite?

  1. The designate angle, theta
  2. The length of the side
  3. The position of the right angle only
  4. The triangle's colour in the diagram
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Correct answer: The designate angle, theta

If theta is switched to the other angle, the adjacent and opposite names swap.

Source: Trigonometry and Single Phase AC Generation for Electricians (Flinn), 1.4: Naming Right Triangle Sides

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Questions last reviewed: 18 October 2026