By: Marshella

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9.2 Right Triangle Trigonometry and Applications

• By Marshella
• Jose Pineda Mancia
• Cherry Juliana Sudartono
• Ruth Martha

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Right Triangle
A
Hypotenuse
Opposite Side
C
B
Adjacent Side
3
Teeter is the angle between Hypotenuse and
Adjacent side
A
Hypotenuse
C
B
Adjacent Side
4
sin Opposite Side / Hypotenuse
AC CB
sin
A
Hypotenuse
Opposite Side
C
B
Adjacent Side
5
cos Adjacent Side / Hypotenuse
BC AB
cos
A
Hypotenuse
Opposite Side
C
B
Adjacent Side
6
tangent Opposite Side / Adjacent Side
AC BC
tan
A
Hypotenuse
Opposite Side
C
B
Adjacent Side
7
Problems for Sin
5

• If we know the length of two sides, we can find
  the angle.
• using sin. Solution sin ? 3/5
• ? sin -1 (3/5)
• ? 36.9

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?
2. If we know the angle and the length of one
side, we can find the length of the other
sides. Solution sin 67.4 12/a
b 12/sin 67.4

b 13
a
12
67.4
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