Chapter Four Precalc
t = 11∏/6 corresponds to (√3/2, -1/2) what is the sin, cos, and tan of t?
Sin t= -1/2 cos t= √3/2 tan t = -√3/3
T = -5π/3 corresponds to (1/2, √3/2) what is the sin, cos and tan of t?
Sin t= √3/2 cos t=1/2 tan t = √3
Covert 60 degrees to radian measures π
π /180 then divided by 60 to get 3 so it = π/3
Convert 320 degrees to radian measures
π/180 = 16π/9
Convert π/5 into degrees
π/5 * 180 degrees /π = 180 degrees = 36 degrees
What is 90 degrees in radians?
∏/2
How many degrees is ∏/7?
∏/7 (180 degrees/ ∏)= 25.714 degrees
convert 120 degrees to radians
120 degrees * π/180degrees = 2π/3 radians
What quadrant does 282 degrees lye in?
Quadrant IV
What does -7∏/6 correspond to on the unit circle?
(√2/2, √2/2)
What is -216.35 degrees in radians?
-216.35 degrees (∏/180 degrees) = -3.776 radians
Convert -7π/9 to degrees
-7π/9* 180/π = -140 degrees
315 degrees is equal to what in radians?
315 degrees * (∏/180) = 7∏/4
Find the coterminal angle of 5π/6
5/6 +12π/6 = 17π/6 5π-12/π/6 = -π/6
What are the coterminal angles for 52 degrees?
52 degrees + 360 degrees =412degrees 52 - 360 = 108 degrees
Convert 5π/3 to degrees
5π/3 * 180/π = 300 degrees
What is the complement of 87 degrees?
90-87=3 degrees
Find the complement and supplement of 152 degrees
Complement: none supplement: 180-152 = 28 degrees
Find the complement and supplement of ∏/2
Complement:3π/6 - π/6 = π/3 supplement: π-π/6 = 5π/6
What quadrant does 150 degrees lye in?
Quadrant II
