Describe how to use both an equivalent trigonometric identity and a diagram to demonstrate that two trigonometric ratios are equivalent a Use one of the following equivalent trigonometric expressions sin 0 cos 0 cos 0 sin 2 tan 0 3 cot 0 sin 3 0 2 cos 37 tan 3 0 2 0 cos sin cot 0 b Using a diagram demonstrate how the related angle formulas are true Create an example to illustrate your findings in part a choose a value for and solve