Chapter 10 - NCPN

Standardized Test Practice
Multiple Choice
1. What is the value of cos –1 0.788 A
A 38° B 42°
C 49° D 56°
2. What is the common difference of the
arithmetic sequence below C
18.4, 16.1, 13.8, 11.5, 9.2, …
A 2.8 B 2.3
C –2.3 D –2.8
3. What is the slope of line m below B
Gridded Response
6. How many 4-inch cubes can be placed
inside a box that is 16 inches tall,
8 inches wide, and 12 inches long 24
7. What is the value of x in the triangle
below Round to the nearest tenth
of a centimeter. 22.1
Open Ended Response
8. Describe how to convert an angle
measure of 20º from degrees to
radians. Then give the number of
radians. Multiply 20º by
≠
180 ; ≠ 9 radians
A – 3 B – 2 2
3
C
2
D
3
3
2
4. Which angle measure is equivalent to
2≠ radians D
5
A 48° B 64°
C 70° D 72°
5. Evaluate the trigonometric function
y = 6 – cos 2θ for θ = 20º. Round to the
nearest tenth. B
A 5.1
B 5.2
C 5.3
D 5.4
Extended Response
9. Two airplanes take off from the same
airport at the same time. Plane A flies in
a direction 24º east of north and cruises
at a speed of 550 miles per hour. Plane B
flies in a direction 38º west of north and
cruises at a speed of 490 miles per hour.
a. How far has each plane traveled after
90 minutes Plane A: 825 mi; Plane B: 735 mi
b. Sketch a diagram to show the
position of each plane after
90 minutes. see margin
c. Find the distance between the
two planes after 90 minutes. Round
to the nearest tenth. 807.2 mi
Chapter Assessments 505