P3.2.1 - Secant, cosecant and cotangent

Knowledge of secant, cosecant and Angles measured in both degrees and radians. cotangent and of arcsin, arccos and arctan.; Their relationships to sine, cosine and tangent.; Understanding of their graphs and appropriate restricted domains.

Use secant, cosecant and cotangent to connect the rule to the data and decision in the question.

This matters because secant, cosecant and cotangent determines what can be inferred or chosen; begin with the stated conditions and keep the conclusion tied to the evidence.

Example: apply secant, cosecant and cotangent to one small, clearly defined case, show the key step or comparison, and explain the result in words.

Boundary: Secant, cosecant and cotangent is not a universal recommendation. Check the syllabus scope, assumptions, units and the limits of the evidence before generalising.