Angles
(degrees and radians)
(degrees and radians)
Coterminal angle to (5\pi)/4
-(3pi)/4 or -135^o
cos((2\pi)/3)
-1/2
cot((3\pi)/2)
0
The quadrant where
sin\theta>0 and tan\theta<0
Quadrant 2
Reference Angle to -(11\pi)/6
\pi/6 and 30^o
sin(-(\pi)/2)
-1
csc((3\pi)/4)
sqrt(2)
The quadrant where
cos\theta>0 and sin\theta<0
Quadrant 4
Reference angle to (8\pi)/3
\pi/3 and 60^o
tan((2\pi)/3)
-sqrt(3)
sec((7\pi)/6)
(-2sqrt(3))/3
The quadrant where
cot\theta>0 and csc\theta>0
Quadrant 1
Coterminal angle to (7\pi)/2
(3\pi)/2 and 270^o
sin((7\pi)/6)
-1/2
cot((5\pi)/4)
1
The quadrant where
cos\theta<0 and cot\theta>0
Quadrant 3
True or False: (5\pi)/6 and -(19\pi)/6 are coterminal angles.
If true, which quadrant?
True, Quadrant 2
cos((5\pi)/2)
sec((4\pi)/3)
-2
The quadrant where
sin\theta<0 and sec\theta>0
Quadrant 4