1. Unit 7 Right Triangles
Grade: 10
Subject:
Geometry
Date:
1/10/12

2. Identify the correct equation to solve for x.1
Identify the correct equation to solve for x. A
SIN x =13/28 B
COS x=13/28 28 C
TAN x=13/28 x 13

3. 2
Find TAN B. B A
8/15 B
8/17 17 8 C
15/17 A D
15/8 C 15

4. Which trig. ratio equals 15/17.3
Which trig. ratio equals 15/17. B A
SIN A B
COS B 17 8 C
TAN A A D
COS A C 15

5. Identify the correct equation to solve for x.4
Identify the correct equation to solve for x. A
SIN 68 68 B
COS 68 x C
TAN 68 13

6. 5
Classify the triangles as acute, obtuse & right 
respectively.
9,40,41
5,11,12
16,17,24 A
obtuse, right, acute B
acute, right, obtuse C
right,obtuse, acute D
none of the above

7. 6
Computer displays are usually measured along the diagonal of the screen. A 14-inch display has a diagonal that measures 14 inches. If the height of the screen is 8 inches, how wide is the screen? Round answer to the nearest tenth.

8. Find x. Round to nearest tenth.7
Find x. Round to nearest tenth. 17 9 x

9. 8
Dee is parasailing at the ocean. The angle of depression
from her line of sight to the boat is 41. If the cable attaching 
Dee to the boat is 500 feet long, how many feet is Dee above the water? Round to nearest whole number. 41
500

10. 9
Find RY.

11. 10
A golfer is standing at the tee, looking up to the green on a hill. If the 
tee is 36 yards lower than the green and the angle of elevation from 
the tee to the hole is 12, find the distance from the tee to the hole. 
Round to nearest whole number.
tee

12. Answers B D A
11.5 inches
14.4
328 feet 20
173.2 yards