Find sin 315Ë= cos 60Ë= cos 120Ë = cos 240Ë= cos 300
April 04, 2018
(0,1)
o
60
o
0
15
0
_ _ √2 __ __ ,√2 2 2 o
30
o
0 or (1,0) o 360
(-1,0) 180 o
o
cos 300˚= 5
o
o
o
0
o
_ 1 -√3 -__ __ , 2 2
_ √2 __ _ 2 1 -√3 __ __ , 2 2
0
_ 22 -√2 √2 __ , __ 2 2
0
o
5
2_
33
0
31
different?
2
21
30
values alike and
o
_
-√3 1 __ ,-__
24
how are the last 4
_ √3 1 __ , __ 2 2
45
o
cos 240˚=
1 , __ 2 2
o
5
cos 120˚ =
_
-√3 __
13
cos 60˚=
90
12
Find sin 315˚=
2
2
_ _ - √2 __ __ ,√2 2 2
_ 1 √3 __ __ , 2 2 o
_
1 √3 Verify that your unit circle is correct -__ , __
270
o
(0,-1)
_ √3 1 __ ,-__ 2 2 _ -√2 , __ 2
April 04, 2018
Bellwork: 1. Give the exact value of the cos 210˚
L
C b
15
m
15
62o
B
A H
12
M
2. Solve for side m and
(0,1)
o
60
o
0
15
0
_ _ √2 __ __ ,√2 2 2 o
30
o
0 or (1,0) o 360
(-1,0) 180 o
o
cos 300˚= 5
o
o
o
0
o
_ 1 -√3 -__ __ , 2 2
_ √2 __ _ 2 1 -√3 __ __ , 2 2
0
_ 22 -√2 √2 __ , __ 2 2
0
o
5
2_
33
0
31
different?
2
21
30
values alike and
o
_
-√3 1 __ ,-__
24
how are the last 4
_ √3 1 __ , __ 2 2
45
o
cos 240˚=
1 , __ 2 2
o
5
cos 120˚ =
_
-√3 __
13
cos 60˚=
90
12
Find sin 315˚=
2
2
_ _ - √2 __ __ ,√2 2 2
_ 1 √3 __ __ , 2 2 o
_
1 √3 Verify that your unit circle is correct -__ , __
270
o
(0,-1)
_ √3 1 __ ,-__ 2 2 _ -√2 , __ 2
April 04, 2018
Bellwork: 1. Give the exact value of the cos 210˚
L
C b
15
m
15
62o
B
A H
12
M
2. Solve for side m and
