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A clock shows 6:30. Smaller angle between the hour hand and minute hand?
- A.
0∘
- B.
15∘
(Correct Answer) - C.
30∘
- D.
90∘
Explanation
Method 1: Using the Direct Formula
The standard formula to find the angle θ between the hour hand and the minute hand is:
θ=30H−211M
Where:
Substitute the values into the formula:
θ=30(6)−211(30)
θ=∣180−11×15∣
θ=∣180−165∣
θ=15∘
Correct Answer
The smaller angle between the hands at 6:30 is 15∘.
The correct option is (b) 15∘.
Explanation
Method 1: Using the Direct Formula
The standard formula to find the angle θ between the hour hand and the minute hand is:
θ=30H−211M
Where:
Substitute the values into the formula:
θ=30(6)−211(30)
θ=∣180−11×15∣
θ=∣180−165∣
θ=15∘
Correct Answer
The smaller angle between the hands at 6:30 is 15∘.
The correct option is (b) 15∘.