Bee Ling's answer to CIA's Secondary 3 A Maths Singapore question.
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Answer
Date Posted:
3 months ago
Answer in terms of k
Yes I know, but since you asked for help for question d without b, then I already assume you have answer of question b, so you just have to copy the answer of question b right! And that solves everything :) because I didn’t take time to solve b in extra
Besides, to answer b, you need to solve a. So this question can only be done if you solve an and b. If no problem with an and b, then you actually have acquired all the ingredients to solve c and d right ? Hope this helps :)
Use right angled triangle,
You use right angle triangle for ?
Pythagoras theorem
Ok basically in short, my question is have you solved a and b, if yes, just have to copy down the answer from b to d, because I have already proven that the answer is same as sin(1.2pi)
Can u worked out d) ? Tks
I have worked out, but you just have to plug in the answer of b, which is sin(1.2pi).
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