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Solve the equation sin(x) = 0.5 for x in the interval [0, 2π].

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What’s inside this PDF?

Question: Solve the equation sin(x) = 0.5 for x in the interval [0, 2π].

Options:

  1. π/6
  2. 5π/6
  3. 7π/6
  4. 11π/6

Correct Answer: π/6

Solution:

The solutions are x = π/6 and x = 5π/6 in the interval [0, 2π].

Solve the equation sin(x) = 0.5 for x in the interval [0, 2π].

Practice Questions

Q1
Solve the equation sin(x) = 0.5 for x in the interval [0, 2π].
  1. π/6
  2. 5π/6
  3. 7π/6
  4. 11π/6

Questions & Step-by-Step Solutions

Solve the equation sin(x) = 0.5 for x in the interval [0, 2π].
Correct Answer: x = π/6 and x = 5π/6
  • Step 1: Understand the equation sin(x) = 0.5. We need to find the values of x where the sine of x equals 0.5.
  • Step 2: Recall the unit circle and the values of sine for common angles. The sine of an angle is 0.5 at specific angles.
  • Step 3: Identify the angles where sin(x) = 0.5. These angles are π/6 and 5π/6.
  • Step 4: Check if these angles are within the interval [0, 2π]. Both π/6 and 5π/6 are within this interval.
  • Step 5: Write down the solutions. The solutions to the equation sin(x) = 0.5 in the interval [0, 2π] are x = π/6 and x = 5π/6.
  • Trigonometric Equations – The question tests the ability to solve basic trigonometric equations, specifically using the sine function.
  • Unit Circle – Understanding the unit circle is essential for identifying angles where sine takes specific values.
  • Interval Notation – The problem requires solutions to be found within a specified interval, emphasizing the importance of considering the domain.
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