Nctions on your calculator it must be in DEGREE model What is the
tangent of 45°?
3
4 What angle has
a tangent of 1.5?
A
1
56.3099...
B в
1.6197...
B в
0.0262...
THE TANGENT RATIO
Determine tan D and tan F
How are the values of tan D and
tan F related?
D
4
THE SINE AND COSINE RATIOS
a) In ADEF, identify the side
opposite ZD and the side
adjacent to ZD.
12 cm
5 cm
F
D
13 cm
b) Determine sin D and cos D.
Determine sin F and cos F. How
are these values related to sin D
and cos D?