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secondary 3 | A Maths
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Hi, could you kindly advise me the working solution for part (ii) of this question? I am unable to get the same answer as that in the answer key. Thanks.
Date Posted: 4 years ago
Views: 202
Good afternoon Candice! I just woke up and will look at your question when I am ready.
Good afternoon Mr Eric :)
Hope you have a good rest last night and thanks for looking into my question.
I am able to solve part (i) but not part (ii).
I have checked through my workings on part (ii) which I think they look sound, but I am unable to get the same answer as that in the answer key :(
Hope you have a good rest last night and thanks for looking into my question.
I am able to solve part (i) but not part (ii).
I have checked through my workings on part (ii) which I think they look sound, but I am unable to get the same answer as that in the answer key :(
There is a “trick” for part b. Angle B/2 can only lie in one specific quadrant. For example, if B is in the third quadrant (180 to 270), then B/2 will lie in the second quadrant (90 to 135) so its cosine, for example, will be negative.
Will write all my workings now
oic, thanks for the advice, Mr Eric :)
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Good afternoon Candice! Here are my workings for both parts.
Date Posted:
4 years ago
oh...I know where I am wrong now.
Thank you so much, Mr Eric :)
I hope you have a good day ahead :D
Thank you so much, Mr Eric :)
I hope you have a good day ahead :D
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