Trig Functions
What quadrant(s) can sine be located in?
Quadrant 1 and 2
What is the reference angle for sin 150°?
30°
Solve 3 sin(x)+5=0
No solution
What is 0°/360° equivalent to?
0
The coordinates of P can be shown as (tanϴ, cosϴ).
False, it can be written as (cosϴ, sinϴ).
What quadrant(s) can tangent be located in?
Quadrant 1 and 3
What is the reference angle for tan 240°?
60°
2 cos (x)-1 = 0
x= π/3
x= 5π/3
What is 30° equivalent to?
π/6
Cosine is only located in quadrant 3.
False, cosine is located in quadrant 1 and 4.
What phrase is used to remember what quadrants the functions are positive in?
"All Students Take Calculus"
What is the reference angle for sec 300°?
60°
cos2 (x)=1
x= 0, π and 2π
What is 45° equivalent to?
π/4
All trig functions can be located in quadrant 1.
True
If tan ϴ > 0, which quadrant(s) could the terminal side of ϴ lie?
Quadrant 1 or 3
What is the reference angle for cot 315°?
45°
3cos(x)= -1
x= 1.911
What is 180° equivalent to?
π
In quadrant 4, x is positive and y is negative.
True
If sec ϴ < 0, which quadrant(s) could the terminal side of ϴ lie?
Quadrant 2 or 3
What is the reference angle for sec π/2?
None needed.
3 tan(x)- √3 =0
x =π/6 and 7π/6
What is 270° equivalent to?
3π/2
In quadrant 2, x and y are both positive.
False, x is negative and y is positive.