Use reference angles for angles beyond 90°
11th grade (Year 12 in England) · 16 questions · Common Core: HSF.TF.A.2 · England: A-level Pure Mathematics
Name
Date
Score/ 16
Question 1
What is the reference angle for 152°?
Answer
Question 2
Find the exact value of cos 210°.
- A. −√3/2
- B. −√2/2
- C. √3/2
- D. √2/2
Question 3
What is the reference angle for 153°?
Answer
Question 4
Find the exact value of sin 225°.
- A. −√2/2
- B. √2/2
- C. 1/2
- D. −1/2
Question 5
What is the reference angle for 338°?
Answer
Question 6
Find the exact value of sin 330°.
- A. −√2/2
- B. √2/2
- C. 1/2
- D. −1/2
Question 7
What is the reference angle for 105°?
Answer
Question 8
Find the exact value of cos 315°.
- A. √2/2
- B. 1/2
- C. −√2/2
- D. −√3/2
Question 9
What is the reference angle for 130°?
Answer
Question 10
Find the exact value of cos 150°.
- A. −√3/2
- B. √3/2
- C. 1/2
- D. −1/2
Question 11
What is the reference angle for 271°?
Answer
Question 12
Find the exact value of sin 135°.
- A. √3/2
- B. √2/2
- C. −√2/2
- D. −1/2
Question 13
What is the reference angle for 237°?
Answer
Question 14
Find the exact value of sin 240°.
- A. 1/2
- B. −√3/2
- C. √3/2
- D. −√2/2
Question 15
What is the reference angle for 98°?
Answer
Question 16
Find the exact value of cos 210°.
- A. −√2/2
- B. √3/2
- C. √2/2
- D. −√3/2
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