PRECALC I - SECTION 5.1, 5.2, 5.4 WORKSHEET – A
FIND THE INDICATED SIDE OR ANGLE. INCLUDE A SKETCH.
1. b = 45, mA = 56°, mB = 72°. Find c.
2. a = 10, b = 13, mC = 70°. Find c.
3.
Find X.
4. Find X
Q
B
21
X
X
A
36
P
10
C
18
R
5. If a = 30, b = 20, c = 40, find the largest angle.
6. If a = 127, c = 79, mA = 50°, find mC .
7. If a = 20, c = 25, mA = 26°, find mC .
PRECALC I – APPLICATION PROBLEMS – B
SECTIONS 5.1, 5.2, 5.4
1. At an airport, cars drive down a ramp 96 feet long to reach the lower level baggage-claim area 13 feet below the main
level. What angle does the ramp make with the ground at the lower level?
2. A ranger can see the north end of a lake 15 km away and the south end of a lake 19 km away. The angle between the
two lines of sight is 104. How long is the lake?
3. A homeowner is to construct a ramp to his front door to make it wheelchair accessible. How long is the ramp if the
door is 4 feet above ground level and the angle of elevation is 10?
4. Two angles of a triangle measure 32° and 53°, and the longest side is 55 cm. Find the length of the shortest side.
5. Two streets meet at an angle of 52°. If a triangular lot has frontages of 60 meters and 65 meters on the two streets,
find the perimeter and the area of the lot.
6. The angle of depression from the top of an 800-foot cliff to the base of a log cabin is 37°. How far is the cabin from
the foot of the cliff?
7. Two planes leave the same airport at the same time. One flies west at 500km/hr and the other flies southeast at
300km/hr. Find the distance between them after 1-1/2 hours.