GCSE Maths Tutor no.19 the Cosine Rule

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Uploaded by on Sep 28, 2008

The Cosine Rule and how to use it in GCSE maths.

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  • helpful thanks

  • excellent. Thankyou so much i have exams on monday and i was stuck on this topic :)

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  • thanks, i have my IGCSE mocs on tuesday. this was confusing me a bit.

  • I thought when rounding, you didn't count anything but the digit directly after the number of decimal places you were rounding to. So if you had 35.4247 to 2 d.p. you would get 35.42 as opposed to 35.43 if you saw that 7 rounds up so that it's 35.425 and then 35.43 after that.

  • thank you

  • I have trouble rearranging....

  • legend thanks saved my brain

  • really helpful

    thx x

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