Transcript Slide 1

5-5
Solving Right Triangles
Introduction
•
•
SOH CAH TOA helps you remember which trig function to use in order
to find sides or angles of a right triangle.
When you Input angles into the primary trig functions, the output is the
ratio of the sides of a right triangle
opp
sin( A) 
hyp
Adj
cos(A) 
Hyp
Opp
tan(A) 
Adj
• When you Input ratios of a right triangle into the inverse trig
functions the output is the angle.


Opp


1 Adj
1 Opp
A  Sin 
 A  Tan 
 A  Cos 

Hyp
Hyp
 Adj 
1
Put them to use…
• Solve for x.
3
sin(x) 
2
tan(tan
• Evaluate
1
6
( ))
11
.
*
• Evaluate

 2 
cos arcsin  
 3 

f = 17, d = 32, find E
F
e
d
E
f
D
If E = 33 degrees and f = 5.8
Find the missing parts.
F
e
d
E
f
D