The three formulae: sin, cos, tan
Hypotenuse- is the longest side and is always opposite to the right angle.
Opposite & adjacent- sides relate to the angle under considerate
The are three formulae involved in trigonometry:
sin= opposite / hypotenuse
cos= adjacent / hypotenuse
tan= opposite / adjacent
Which formula to use?
There are a couple of ways to help you remember which formulae to use.
- remember SOHCAHTOA (pronouce sock-ka-toa)
- Some Old Hag Cracked All Her Teeth On Apples