Trigonometric ratios in all quadrants resources
Quick Reference (2)
Graphs of the trigonometric functions
This leaflet gives graphs of the functions
sine, cosine and tangent and notes some important properties. (Engineering Maths First Aid Kit 4.3)
The trigonometrical ratios
This leaflet defines sine, cosine and tangent of angles in a right-angled triangle and gives some standard ratios. (Engineering Maths First Aid Kit 4.2)