© 1999 T
EXAS
I
NSTRUMENTS
I
NCORPORATED
TI
-
34
Û
: A Guide for Teachers
12
Trig Functions
Name ___________________________
Date
___________________________
1. Find the trigonometric ratios for the triangle. Round to the nearest hundredth.
(Use
%
‚
for rounding.)
a. sin
C
_________________
b. cos
C
_________________
c. tan
C
_________________
d. sin
A
_________________
e. cos
A
_________________
f.
tan
A
_________________
2. Using the TI
-
34
Ö
, find the value of each ratio. Round to the nearest ten
thousandth.
a. sin 71º
_________________
b. tan 31º
_________________
c. cos 25º
_________________
3. Using the TI
-
34
Ö
, find the measure of each angle. Round to the nearest
degree.
a. sin
B
= 0.4567
_________________
b. cos
A
=0.6758
_________________
c. tan
C
= 5.83
_________________
5
4
3
B
C
A