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NAME
DATE
10-6
PERIOD
Practice
Trigonometric Ratios
Find the values of the three trigonometric ratios for angle A.
1.
2.
#
15
97
72
$
"
#
36
$
"
36
15
36
sin A = −
, cos A = −
, tan A = −
65
72 , tan A = 65
sin A = −
, cos A = −
−
97
97
72
15
39
39
Use a calculator to find the value of each trigonometric ratio to the nearest
ten-thousandth.
3. tan 26° 0.4877
4. sin 53° 0.7986
5. cos 81° 0.1564
Solve each right triangle. Round each side length to the nearest tenth.
6.
7.
$
#
22
67°
29°
#
9
"
∠B = 23°, AB = 23.9, AC = 9.3
Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
"
$
∠A = 61°, AB = 10.3, BC = 5.0
Find m∠J for each right triangle to the nearest degree.
8.
-
11
9. +
+
-
5
12
18
,
,
24°
42°
#
10. SURVEYING If point A is 54 feet from the
tree, and the angle between the ground at
point A and the top of the tree is 25°, find
the height h of the tree.
h
25°
25.2 ft
Chapter 10
"
40
54 ft
$
Glencoe Algebra 1