Trigonometry Summary
The longest side of a rightangled triangle is the hypotenuse
The other two sides are opposite or adjacent to a chosen angle.
Pythagoras's Theorem is that the side lengths always relate thus:
Ratios between sides are normally called sin, cos and tan.
The word sohcahtoa can help you learn them!
soh means sin = o÷h
Knowing the lengths of sides, we can find a sin, cos or tan ratio. From this angles can be found using inversesin (or inversecos, or inversetan) on scientific calculators.
