Quiz 8, Math 1060—003
November 15, 2013
You have 15 minutes to complete this quiz. No calculators, notes, books, etc. are
allowed. Show your work, and place your final answer in the boxes provided.
You may use a scientific calculator on #1—2. For credit, show your work. Round
your answers to 0.01 (the hundredths place).
Name:
I\fl.Swer K€.(
Us eful formulas:
iiNTfl
2
c
2
2+b
a
=
AT
=
—
2ab cos C
absinC
—s-sinA
AT
=
=
sinB
s(s
—
a)(s
—
b)(s
—
c)
1. (4 points) Solve for the remaining parts of the triangle. Clearly label and circle each part
that you find.
L
8
I ii.ii
iil
M’i3b°
M
K
0.
COS
-
121..
z 31.21°
L
I21S’i...
lI.I4...
Siri..M
M
s’r’
;,i
L
%k 4355°
—
t1.
2. (3 points) Turn page
3. (3 points) Turn page
1zO’ —L-M
31.244°
2. (3 points) Find the area of the triangle (calculator may be used but is not necessary).
Show your work.
2-
4
A=4T5?s-53j
Z2
2-
Area=
3J
—:--
r
0
3. (3 points) Find all solutions of the equation in the interval [0, 2n). The numbers are
related to special points on the unit circle, so your answer must be exact (i.e. no decimals).
(However, feel free to check your work using your calcuIatoi)
cscx —2
rLC’X
=
0
2
•1
Si ai
S—
21C
,‘-
I
H=
TUzrC
s’
I
I
I