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# Edexcel C2 sine and cosine rule help Watch

1. I don't understand how to work out Exercise 2F question 6c). Any help on how to find x? See attachment for question. Thanks

2. It's quite difficult. Can you find any of the other lengths or angles? This will allow you to work towards the one you want.
3. (Original post by otakulei)
I don't understand how to work out Exercise 2F question 6c). Any help on how to find x? See attachment for question. Thanks

The angle ACB is 130.
Let BC be y then with cosine rule

from this you will get y

Let the BAC angle is
WIth cosine rule

from this you will get

Then a sine rule for triangle ADC will give the angle x

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