Answer numbers 16 to 18 16. Which of the following angles lies in the third quadrant and has a reference angle equal to 30∘? A.−30∘ B.600∘ C.−210∘ D.−870∘ 17. What is 690∘ in radian measure? A.9π/3 B.15π/4 C.10π/3 D.23π/6 18. Which of the following is coterminal with −7π/6 ? A.−30∘ B.210∘ C.150∘ D.135∘
Answer numbers 16 to 18 16. Which of the following angles lies in the third quadrant and has a reference angle equal to 30∘? A.−30∘ B.600∘ C.−210∘ D.−870∘ 17. What is 690∘ in radian measure? A.9π/3 B.15π/4 C.10π/3 D.23π/6 18. Which of the following is coterminal with −7π/6 ? A.−30∘ B.210∘ C.150∘ D.135∘
Answer numbers 16 to 18 16. Which of the following angles lies in the third quadrant and has a reference angle equal to 30∘? A.−30∘ B.600∘ C.−210∘ D.−870∘ 17. What is 690∘ in radian measure? A.9π/3 B.15π/4 C.10π/3 D.23π/6 18. Which of the following is coterminal with −7π/6 ? A.−30∘ B.210∘ C.150∘ D.135∘
16. Which of the following angles lies in the third quadrant and has a reference angle equal to 30∘?
A.−30∘
B.600∘
C.−210∘
D.−870∘
17. What is 690∘ in radian measure?
A.9π/3
B.15π/4
C.10π/3
D.23π/6
18. Which of the following is coterminal with −7π/6 ?
A.−30∘
B.210∘
C.150∘
D.135∘
Figure in plane geometry formed by two rays or lines that share a common endpoint, called the vertex. The angle is measured in degrees using a protractor. The different types of angles are acute, obtuse, right, straight, and reflex.
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