Sharp EL-W516B - Practice Activity

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