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What does this sign mean?
What does this sign mean?
What does this sign mean?
8.6: The Law of Sines
Always pay attention to sines!!
When the angle of elevation of the
sun is 33 degrees, a telephone pole
that is tilted 7 degrees from vertical
casts a 30ft shadow. Find the length
of the pole
The Law of Sines
sin A sin B sin C


a
b
c
When the angle of elevation of the
sun is 33 degrees, a telephone pole
that is tilted 7 degrees from vertical
casts a 30ft shadow. Find the length
of the pole
17ft
Find w
W
17
8
29
A
Y
“Solving a Triangle”: Find the
measures of all missing sides and all
missing angles
Solve triangle DEF if m<D = 112,
m<F = 8, f = 2
Solve triangle NOW if m<O = 32,
n = 30, o = 16
Law of Sines Summary
• Used for non-right triangles
• Used in AAS, ASA and SSA situations