Level 457 Level 459
Level 458

Reference Angles II


43 words 0 ignored

Ready to learn       Ready to review

Ignore words

Check the boxes below to ignore/unignore words, then click save at the bottom. Ignored words will never appear in any learning session.

All None

Ignore?
2π/3
π/3
3π/4
π/4
5π/6
π/6
7π/6
π/6
5π/4
π/4
4π/3
π/3
5π/3
π/3
7π/4
π/4
11π/6
π/6
1/2
Sin 30
√3/2
cos 30
√3/3
tan 30
√2/2
sin 45
√2/2
cos 45
1
Tan 45
√3/2
sin 60
1/2
Cos 60
√3
tan 60
1
sin 90
0
cos 90
Undefined
tan 90
0
sin 180
-1
cos 180
0
tan 180
-1
sin 270
0
cos 270
Undefined
tan 270
reference angle
an acute angle formed by the terminal side of the given angle and the x-axis.
45°
π/4
80°
260°
355°
55°
415°
85°
-275°
53°
487°
62°
-422°
3π/7
4π/7
2π/5
7π/5
6π/17
28π/17
π/14
111π/14
all
quadrant i
sin
quadrant ii
tan
quadrant iii
cos
quadrant iv