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Trigonometry GCSE Q

http://bland.in/trigonometry_new2.pdf

How do you do part b of question 1? I used the sine rule and got 6.36cm (3sf), is that correct?

Any help will be appreciated :smile:
I'm also doing GCSE and I'm not the best at Maths so I may also be wrong, but I also got 6.36cm.
Reply 2
Avatar for mxskaan
mxskaan
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Original post by loginrunner
I'm also doing GCSE and I'm not the best at Maths so I may also be wrong, but I also got 6.36cm.


Okay thanks! Good luck with the calculator paper tomorrow

Posted from TSR Mobile
Original post by mxskaan
Okay thanks! Good luck with the calculator paper tomorrow

Posted from TSR Mobile


Thanks, you too.
Original post by mxskaan
http://bland.in/trigonometry_new2.pdf

How do you do part b of question 1? I used the sine rule and got 6.36cm (3sf), is that correct?

Any help will be appreciated :smile:


Hi please could you explain this question to me I really don't get it! Do you use trig or the sine rule?
Thank you!:smile:
Here's a clue: What does bisect mean? It uses that word in the question.
Original post by mxskaan
http://bland.in/trigonometry_new2.pdf

How do you do part b of question 1? I used the sine rule and got 6.36cm (3sf), is that correct?

Any help will be appreciated :smile:


I got 6.35cm. Obviously I have made a minor calculation error, but our methods must have been similar.
Reply 7
Avatar for mxskaan
mxskaan
OP
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Original post by sunshine774
Hi please could you explain this question to me I really don't get it! Do you use trig or the sine rule?
Thank you!:smile:


I did tan-1(18/6) to get x. Then bc it's bisecting DBC=45. I then added x and 45 and subtracted it from 180 to get BDC. Used the sine rule to get line BD :smile: hope that helps not really good at explanations
Original post by mxskaan
I did tan-1(18/6) to get x. Then bc it's bisecting DBC=45. I then added x and 45 and subtracted it from 180 to get BDC. Used the sine rule to get line BD :smile: hope that helps not really good at explanations


Thank you so much I understand it now! Best of luck with the exam tomorrow!:smile:
Reply 9
Avatar for mxskaan
mxskaan
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Original post by sunshine774
Thank you so much I understand it now! Best of luck with the exam tomorrow!:smile:


awww good luck too :h:

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