Interestingly enough, the trigonometric functions that define those relationships are also closely tied to circles. Needless to say, this makes trig one of the hardest topics in math for students ...

National 5 Working with trigonometric relationships in degrees Trigonometric relationships Trigonometric functions can have several solutions. Sine, cosine and tangent all have different positive ...

It then gives tables to five places of values of the six trigonometric functions mentioned, as well as a table of decimal equivalents. In addition to this material, the pamphlet has a section on ...