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# C2 cos+sin watch

1. https://b940eb267c31463d4d23ccfd3105...%20Edexcel.pdf

Question 8b

don't know how to show that at all
tbh i'd just say

then minus my answer from part a by the answer i just got, to get an answer for part b i mean why so complicated? :/

Zacken
2. (Original post by thefatone)
https://b940eb267c31463d4d23ccfd3105...%20Edexcel.pdf

Question 8b

don't know how to show that at all
tbh i'd just say

then minus my answer from part a by the answer i just got, to get an answer for part b i mean why so complicated? :/

Zacken
Draw a triangle OPQ, you know the lengths of two of the sides since they are the radii, then you can find the length PQ whihc can then add to (a) to get the answer.
3. (Original post by Zacken)
Draw a triangle OPQ, you know the lengths of two of the sides since they are the radii, then you can find the length PQ which can then add to (a) to get the answer.
ok done it thanks

4. (Original post by thefatone)
Yep.
5. (Original post by Zacken)
Yep.
6. (Original post by thefatone)
Just try and think. You're not going to have TSR in the exam.
7. (Original post by Zacken)
Just try and think. You're not going to have TSR in the exam.
hopefully i'll have done enough of these things to know all these little extra things i can do when they gimme cross reference questions including like 50 topics in 1
8. (Original post by thefatone)
hopefully i'll have done enough of these things to know all these little extra things i can do when they gimme cross reference questions including like 50 topics in 1
Hopefully.
9. (Original post by Zacken)
Hopefully.
That's all i need to do xD
10. (Original post by thefatone)
That's all i need to do xD

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