Ghazi Emir Jennings's answer to June's Secondary 3 A Maths Singapore question.

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Ghazi Emir Jennings
Ghazi Emir Jennings's answer
16 answers (Tutor Details)
1st
First express A+B as 180–C, then make use of the addition formula to get the final answer. Hope this helps, feel free to clarify any doubts :)