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