Applying Laws of Sines and Cosines
Geometry · Flashcards · Application
GEOMETRY · FLASHCARDS
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QUESTION
Find
c
c
c
using the Law of Sines if
C
=
60
∘
C=60^\circ
C
=
6
0
∘
,
A
=
45
∘
A=45^\circ
A
=
4
5
∘
, and
a
=
8
a=8
a
=
8
.
QUESTION
Find
C
C
C
in degrees if
cos
C
=
0
\cos C=0
cos
C
=
0
.
QUESTION
Find
K
K
K
if
a
=
10
a=10
a
=
10
,
b
=
6
b=6
b
=
6
, and included angle
C
=
30
∘
C=30^\circ
C
=
3
0
∘
.
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ANSWER
K
=
1
2
⋅
10
⋅
6
sin
30
∘
K=\frac{1}{2}\cdot 10\cdot 6\sin 30^\circ
K
=
2
1
⋅
10
⋅
6
sin
3
0
∘
. Apply area formula with sides
a
a
a
,
b
b
b
and included angle
C
C
C
.
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