Question detail
calculator check: state the exact value of cos 60 degrees.
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Mensuration and calculation
Question
- A. 1/2
- B. 3
- C. -1
- D. 2
Answer
The correct answer is 1/2.
Explanation
calculator check uses Exact trigonometric values: identify the quantities, do the stated operation, and select 1/2 because it matches the verified final answer.
Common mistake
Exact trigonometric values common mistake 1
Writing a final answer without showing the method that justifies it. This can weaken answers for: [Higher only] Know exact values of sin and cos for 0, 30, 45, 60 and 90 degrees..
Show the method first, then give the final answer in the required form. Apply this directly to Exact trigonometric values.
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