lim (kl9356) – Homework 3 – Weathers – (17104)
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9
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001
(part 1 of 2) 10.0 points
Two sides of a triangle are 12
.
7 cm and
20
.
4 cm, with the included angle 114
◦
.
a) What is the length of the third side?
Answer in units of cm.
002
(part 2 of 2) 10.0 points
b) What is angle opposite the side 12
.
7 cm?
Answer in units of
◦
.
003
10.0 points
A high fountain of water is located at the
center of a circular pool as in the figure.
A
student walks around the pool and estimates
its circumference to be 229 m.
Next, the
student stands at the edge of the pool and uses
a protractor to gauge the angle of elevation of
the top of the fountain to be 66
.
9
◦
.
How high is the fountain? Answer in units
of m.
004
10.0 points
Two airplanes leave an airport at the same
time.
The velocity of the first airplane is
650 m
/
h at a heading of 55
.
6
◦
. The velocity
of the second is 650 m
/
h at a heading of 96
◦
.
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 Fall '08
 Weathers
 Magnetism, Work, lim, resultant displacement

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