C
A
D
Y
M
A
T
H
Assignments
Battle
Projects
Text Scrambler
Text to Image
TI-84/nspire Calculator Basic Programs
Randomizer
Vocabulary Trinket
Demos
Trebuchet (Linear/Angular Velocity)
Links
CiteThis (Citation Generator)
Academic Phrasebank
Desmos (Graphing Calculator)
WabbitEmu (TI-84 Emulator)
Wolfram Alpha (Equation Solver)
Contact
Login
Register
English
中文
français
139684422
Trigonometric Key Angles
Name __________
#1.
\(\sin \frac{-11\pi}{3}\)
\(-\frac{\sqrt{2}}{2}\)
\(2\)
\(\frac{2\sqrt{3}}{3}\)
\(\frac{\sqrt{3}}{2}\)
#2.
\(\csc 240°\)
\(-2\)
\(-\frac{2\sqrt{3}}{3}\)
\(-\sqrt{2}\)
\(\frac{\sqrt{2}}{2}\)
#3.
\(\sin \frac{19\pi}{4}\)
\(-\sqrt{3}\)
\(1\)
\(\frac{\sqrt{2}}{2}\)
\(\frac{\sqrt{3}}{3}\)
#4.
\(\cot \frac{3\pi}{4}\)
\(-1\)
\(-\frac{2\sqrt{3}}{3}\)
\(-\frac{\sqrt{3}}{2}\)
\(1\)
#5.
\(\cot \frac{2\pi}{3}\)
\(-\frac{1}{2}\)
\(-\frac{\sqrt{3}}{3}\)
\(\sqrt{2}\)
\(\sqrt{3}\)
#6.
\(\csc 135°\)
\(-2\)
\(-\frac{\sqrt{2}}{2}\)
\(\frac{\sqrt{3}}{2}\)
\(\sqrt{2}\)
#7.
\(\cot 30°\)
\(-\frac{\sqrt{2}}{2}\)
\(-\frac{\sqrt{3}}{3}\)
\(\sqrt{2}\)
\(\sqrt{3}\)
#8.
\(\cos 330°\)
\(-1\)
\(-\sqrt{2}\)
\(1\)
\(\frac{\sqrt{3}}{2}\)
#9.
\(\tan -540°\)
\(0\)
\(\frac{2\sqrt{3}}{3}\)
\(\frac{\sqrt{2}}{2}\)
\(\sqrt{3}\)
#10.
\(\csc 330°\)
\(-2\)
\(-\frac{1}{2}\)
\(1\)
\(\frac{2\sqrt{3}}{3}\)
#11.
\(\tan \frac{7\pi}{6}\)
\(-2\)
\(-\frac{2\sqrt{3}}{3}\)
\(-\frac{\sqrt{3}}{2}\)
\(\frac{\sqrt{3}}{3}\)
#12.
\(\tan \frac{\pi}{6}\)
\(-\sqrt{3}\)
\(\frac{\sqrt{2}}{2}\)
\(\frac{\sqrt{3}}{2}\)
\(\frac{\sqrt{3}}{3}\)
#13.
\(\sec \frac{\pi}{3}\)
\(-1\)
\(2\)
\(\sqrt{3}\)
\(undefined\)
#14.
\(\csc 30°\)
\(0\)
\(2\)
\(\frac{1}{2}\)
\(\sqrt{3}\)
#15.
\(\sin \frac{13\pi}{4}\)
\(-\frac{\sqrt{2}}{2}\)
\(-\frac{\sqrt{3}}{2}\)
\(2\)
\(\sqrt{2}\)
#16.
\(\sin 120°\)
\(-1\)
\(-\frac{\sqrt{3}}{3}\)
\(-\sqrt{3}\)
\(\frac{\sqrt{3}}{2}\)
#17.
\(\tan -60°\)
\(-\frac{2\sqrt{3}}{3}\)
\(-\sqrt{3}\)
\(\frac{\sqrt{2}}{2}\)
\(undefined\)
#18.
\(\sec \pi\)
\(-1\)
\(-\frac{2\sqrt{3}}{3}\)
\(\frac{2\sqrt{3}}{3}\)
\(undefined\)
#19.
\(\cot 120°\)
\(-\frac{2\sqrt{3}}{3}\)
\(-\frac{\sqrt{3}}{3}\)
\(\sqrt{2}\)
\(\sqrt{3}\)
#20.
\(\sec 30°\)
\(-\frac{2\sqrt{3}}{3}\)
\(-\frac{\sqrt{3}}{2}\)
\(-\sqrt{3}\)
\(\frac{2\sqrt{3}}{3}\)
#21.
\(\csc \frac{19\pi}{4}\)
\(-2\)
\(-\frac{\sqrt{2}}{2}\)
\(\frac{\sqrt{3}}{2}\)
\(\sqrt{2}\)
#22.
\(\sec \frac{5\pi}{4}\)
\(-\frac{\sqrt{3}}{3}\)
\(-\sqrt{2}\)
\(0\)
\(2\)
#23.
\(\cot -270°\)
\(-1\)
\(-\frac{1}{2}\)
\(-\sqrt{2}\)
\(0\)
#24.
\(\sin 0\)
\(-\frac{1}{2}\)
\(-\frac{2\sqrt{3}}{3}\)
\(-\sqrt{3}\)
\(0\)
#25.
\(\sin \frac{7\pi}{6}\)
\(-2\)
\(-\frac{1}{2}\)
\(-\frac{\sqrt{2}}{2}\)
\(undefined\)
#26.
\(\tan 60°\)
\(-\frac{2\sqrt{3}}{3}\)
\(-\frac{\sqrt{3}}{2}\)
\(\frac{\sqrt{3}}{2}\)
\(\sqrt{3}\)
#27.
\(\sec -2\pi\)
\(-1\)
\(-\frac{\sqrt{3}}{3}\)
\(1\)
\(\sqrt{3}\)
#28.
\(\cos 210°\)
\(-\frac{\sqrt{3}}{2}\)
\(-\frac{\sqrt{3}}{3}\)
\(1\)
\(2\)
#29.
\(\cot \frac{5\pi}{3}\)
\(-\frac{1}{2}\)
\(-\frac{\sqrt{3}}{3}\)
\(-\sqrt{2}\)
\(-\sqrt{3}\)
#30.
\(\cos 120°\)
\(-1\)
\(-\frac{1}{2}\)
\(-\frac{2\sqrt{3}}{3}\)
\(0\)
1
A
B
C
D
2
A
B
C
D
3
A
B
C
D
4
A
B
C
D
5
A
B
C
D
6
A
B
C
D
7
A
B
C
D
8
A
B
C
D
9
A
B
C
D
10
A
B
C
D
11
A
B
C
D
12
A
B
C
D
13
A
B
C
D
14
A
B
C
D
15
A
B
C
D
16
A
B
C
D
17
A
B
C
D
18
A
B
C
D
19
A
B
C
D
20
A
B
C
D
21
A
B
C
D
22
A
B
C
D
23
A
B
C
D
24
A
B
C
D
25
A
B
C
D
26
A
B
C
D
27
A
B
C
D
28
A
B
C
D
29
A
B
C
D
30
A
B
C
D