FP3.4.5 - Reduction formulae

Derive and use simple reduction formulae for integrals, including powers of sine.

Use fp3.4.5 - reduction formulae to connect the rule to the data and decision in the question.

This matters because fp3.4.5 - reduction formulae determines what can be inferred or chosen; begin with the stated conditions and keep the conclusion tied to the evidence.

Example: apply fp3.4.5 - reduction formulae to one small, clearly defined case, show the key step or comparison, and explain the result in words.

Boundary: use the formula and units given in the question, show the substitution and interpret the result; the calculation alone is not the conclusion.