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secondary 3 | A Maths
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Wen
Wen

secondary 3 chevron_right A Maths

Please help me. Where did I go wrong? Thank you!

Date Posted: 6 years ago
Views: 325
Jiayang
Jiayang
6 years ago
Cos2A + 1 = 2cos²Α
Use this instead of the sine square one

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Hsieh En Hsin
Hsieh En Hsin's answer
11 answers (Tutor Details)
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Wen
Wen
6 years ago
I didn’t see it thank you!