Download 4/2 Solving Right Triangles notes File

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13.1 – Use Trig with Right
Triangles
Unit VA Day 3
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Do Now
 Which
trig. function of 28º would involve 15 and a?
 Which
trig. function of 28º would involve 15 and c?
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Ex. 1.
 Find
the values of the unknown side lengths.
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Solving a Right Triangle
 To
solve a right triangle means to find all
________ side lengths and all _______ angle
measures.
 If
you already know one acute angle measure,
you can find the other angle measure by
_______________________________________
 You must use trigonometry to find the remaining
sides
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Example 2
Solve ABC, using the diagram and the given
measurements.
 mA
= 40°, c = 8
A
B
C
A
40°
H
8
a
b
O
c