HiderApplecross's answer to Su's Secondary 3 A Maths Singapore question.

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HiderApplecross
Hiderapplecross's answer
1783 answers (Tutor Details)
Hi, I provide 1 to 1 tuition, $70/1.5h, can cover English / Maths / Science, ex-school teacher, can produce teaching cert from NIE, WhatsApp 9033 8810 or email [email protected] :)
Su
Su
2 years ago
Thank you for your help but I don't understand how cos 210 become -cos 30
Su
Su
2 years ago
^^For try 6 part (ii)