If angle \(\theta\) is 135°, evaluate cos\(\theta\)
MATHEMATICS
JAMB 2012
If angle \(\theta\) is 135°, evaluate cos\(\theta\)
- A. \(\frac{1}{2}\)
- B. \(\frac{\sqrt{2}}{2}\)
- C. \(-\frac{\sqrt{2}}{2}\)
- D. \(-\frac{1}{2}\)
Correct Answer: C. \(-\frac{\sqrt{2}}{2}\)
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