Math 3C: Trigonometry Review
What is the domain of the sine and cosine functions?
(-inf, inf)
If sin(t)=3/8 and t is in the 2nd quadrant, find cos(t).
-55/64
What is cos(3pi/2)?
0
What is sin(pi/2)?
1
What is cos(pi/3)?
1/2
Find the angle between 0 and 2π in radians that is coterminal to: -pi/9
17pi/9
What is sec(pi/3)?
2
What is the reference angle for -pi/8?
22.5 degrees
Find the angle between 0° and 360° that is coterminal to: -110 degrees
250 degrees
Find the angle between 0° and 360° that is coterminal to: 1400 degrees
320 degrees
What is the reference angle for -315 degrees?
45 degrees
Find the angle between 0 and 2π in radians that is coterminal to: 10pi/3
4pi/3
What is the reference angle for 240 degrees?
60 degrees
What is the reference angle for 100 degrees?
80 degrees
What is the range of the sine and cosine functions?
[-1, 1]
What is csc(pi/4)?
sqrt(2)
What is sin(pi/4)?
sqrt(2)/2
What is sin(pi/3)?
sqrt(3)/2
What is tan(pi/6)?
sqrt(3)/3 or 1/sqrt(3)