NAME ___________________________________________ DATE________________
INVERSE TRIGONMETRIC FUNCTIONS
Use your EL-W516B and the law of sines and the law of cosines to find
the missing angle.
The law of sines is
sin
sin
sin
c
b
a
.
The law of cosines is
cos
2
2
2
2
ab
b
a
c
.
1. Given
23
,
7
,
2
b
a
find
in grads.
___________________
2. Given
94
,
21
,
34
c
a
grads, find
in radians.
___________________
3. Given
5
,
4
,
3
c
b
a
find
in degrees.
___________________
4. Given
17
,
24
,
40
c
b
a
find
in radians
___________________
5. Given
13
,
12
,
5
c
b
a
find
in degrees.
___________________
23
