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

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secondary 4 A Maths Singapore

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

Date Posted: 4 years ago

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Date Posted: 4 years ago

Eric Nicholas K

4 years ago

No.

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

It's 1, not 2.

Liu HK

4 years 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

4 years ago

Not to worry, your workings are correct thereafter. I do make errors from time to time.