Right-Angled Triangle

1
SOHCAHTOA
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
what you know
Adj
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