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What is the sine of a 30-degree angle?

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Question: What is the sine of a 30-degree angle?

Options:

  1. 0
  2. 0.5
  3. 0.707
  4. 1

Correct Answer: 0.5

Solution: 

The sine of 30 degrees is 0.5.

What is the sine of a 30-degree angle?

Practice Questions

Q1
What is the sine of a 30-degree angle?
  1. 0
  2. 0.5
  3. 0.707
  4. 1

Questions & Step-by-Step Solutions

What is the sine of a 30-degree angle?
  • Step 1: Understand that sine is a trigonometric function that relates to angles in a right triangle.
  • Step 2: Recall that the sine of an angle is defined as the ratio of the length of the opposite side to the length of the hypotenuse.
  • Step 3: For a 30-degree angle in a right triangle, the opposite side is half the length of the hypotenuse.
  • Step 4: Therefore, the sine of 30 degrees can be calculated as 1/2.
  • Step 5: Convert the fraction 1/2 to a decimal, which equals 0.5.
  • Step 6: Conclude that the sine of a 30-degree angle is 0.5.
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