1. Hyp Opp Adj c a b c 2 = a 2 + b 2 b 2 = c 2 - a 2 a 2 = c 2 - b 2 xo
SOHCAHTOA xo
Process
Label diagram
and write down
Hyp
Opp
SOH CAH TOA
To find a length or angle given either a length and an angle
or two lengths
Identify what you want to find
Adj
what you know
and use appropriate ratio
Right-Angled Triangle
(longest side)
Hypotenuse
To find a length given ONLY lengths c a b
In words
(Hypotenuse)2 = (shorter side)2 + (other shorter side)2
c 2 = a 2 + b 2
Pythagoras
Theorem
Smaller side
then
b 2 = c 2 - a 2
a 2 = c 2 - b 2