Notes on 8-4

1. SINE AND
COSINE
3108.4.47
Jim Smith JCHS

2. Our Aunt Olivia Has A Horse To Sell Cheap
O A O H AH T S C
=
=
=
Tangent
adjacent
opposite

Sine
hypotenuse
opposite

Cosine
hypotenuse
adjacent


3. 10
X 10
50
sin
x

50°
O
A
O
H
A
H
=
=
=
T
S
C
10
1
7660
.
0 x

OPPHYP
7
.
7

X

4. O
A
O
H
A
H
=
=
=
T
S
C
72°
13
X
ADJ HYP
X
COS
13
72 
X
13
1
3090
.
0

13
3090
.
0 
X
3090
.
0
13

X
1
.
42

X

5. FINDING AN ANGLE
X
6
14 OPPOSITE
HYPOTENUSE
14
6
X
SIN 

)
14
6
(
SIN
2ND 

 4
.
25
X