The Unit Circle Quiz Answers
Which of the following best explains why tan5π/6 ≉ tan 5π/3?
Tangent is positive in the second quadrant and negative in the fourth quadrant. (Wrong)
which of the following best explains why cos 2 pi/3 =/ cos 5 pi/3?
cosine is negative in the second quadrant and positive in the forth quadrant.
Which equation can be used to determine the reference angle, r, if 0 = 7 pi/12?
r = 0 - pi (wrong)
Which expression is equivalent to sin 7π/6?
Sin 11π/6
What is the value of tan 0 in the unit circle below?
√3/2 (wrong)
The terminal side of an angle measuring π/6 radians intersects the unit circle at what point?
(square 3/2, 1/2)
On the unit circle, where 0<0<= 2π, when is tan 0 undefined?
0= π/2 and 0=3π/2
Which expression can be used to determine the reference angle for an angle, x, measuring 150 degrees?
180 - x
What is the value of sin 0 in the diagram below?
24/25
What is the value of cos 0 in the diagram below?
4/5 (wrong) 3/4 (wrong)