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secondary 4 | A Maths
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Sonia
Sonia

secondary 4 chevron_right A Maths chevron_right Singapore

Please help me with (ii), Thank you so so much!:)

Date Posted: 4 months ago
Views: 26

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Liu HK
Liu Hk's answer
42 answers (Tutor Details)
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Eric Nicholas K
Eric Nicholas K
4 months ago
No.

2 sin2 x - 2 sin x - 2 = 0
sin2 x - sin x - 1 = 0

It's 1, not 2.
Liu HK
Liu HK
4 months ago
Thanks for the help, I make careless mistakes sometimes. I will check for them in the future to avoid giving the wrong answers.
Eric Nicholas K
Eric Nicholas K
4 months ago
Not to worry, your workings are correct thereafter. I do make errors from time to time.