Muhd Ilman Fahmi's answer to Darsshan's Malaysia question.

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Muhd Ilman Fahmi
Muhd Ilman Fahmi's answer
42 answers (Tutor Details)
1st
Matter of using the trigonometric identities to simplify into easier terms to work on. Once that is done, rearrange the terms to something more familiar, in this case a quadratic function or another trigonometric function.

Hope it helps!!