Warm-up

1
Warm-up
Sin A Sin B Cos A Cos B Tan A
Tan B
A
13
5
C
B
12
2
Figure out which ratio to use. Find x. Round
to the nearest tenth.
3
Find the missing side. Round to the nearest
tenth.
4
A surveyor is standing 50 feet from the base of a
large tree. The surveyor measures the angle of
elevation to the top of the tree as 71.5. How
tall is the tree?
tan 71.5
?
tan 71.5
71.5
y 50 (tan 71.5)
50
y 50 (2.98868)

5
Find the tangent ratios for each triangle. Then
compare the answers.
Tan D Tan C Tan O Tan A
D
C
72
75
25
24
G
A
T
O
21
7
Since the triangles are similar, they have the
same tangent ratio!
HW Page 159 1 - 8 11-13, 21
6
Class Work Page 159 1 - 8 11-13, 21