Question 35
TrigonometryIf angle θ is 135°, evaluate cos θ.
- A.1/2
- B.√2/2
- C.−√2/2
- D.−1/2
Show the answer and explanation
Answer: C (−√2/2)
Explanation
cos 135° = −cos 45° = −√2/2.
If angle θ is 135°, evaluate cos θ.
Answer: C (−√2/2)
cos 135° = −cos 45° = −√2/2.