Higher Revision: Ex 4J no.9a-d (Heinemann)

Higher Revision (Heinemann)
Unit 1, chapter 4 — Trigonometry: graphs and equations

Solution to question 9a-d of exercise 4J (p67).

Part of a set of worked solutions to the mixed question exercises at the end of each chapter of Heinemann Higher Book (2nd ed) and the revision exercises at the end of each unit.
Book required for the questions.

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