Immanuel_LEE's answer to Cqviezel Liow's Junior College 1 H2 Maths question.

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Immanuel_LEE
Immanuel_lee's answer
32 answers (A Helpful Person)
1st
You may want to double check because I do most of the calculation mentally except for the sin function. (iii) and (iv) solution is in the next image.