Btsmia
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How do u do this?
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XxAb
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Do you know how to do cosine rule??
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RDKGames
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(Original post by Btsmia)
How do u do this?
Use the sine rule to work out the angle at C, first of all.

Then use the fact that all angles in a triangle add up to 180.
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annabamford156
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(Original post by Btsmia)
How do u do this?
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use sine rule (sinA/a=sinC/c) to find angle C and then you have angles B and C already so add them together and minus that from 180 xx
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Btsmia
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Thank u I get it now
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Btsmia
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(Original post by annabamford156)
use sine rule (sinA/a=sinC/c) to find angle C and then you have angles B and C already so add them together and minus that from 180 xx
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Can u help me with this too?
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Mr.noname
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(Original post by Btsmia)
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Can u help me with this too?
You can use the cosine rule to find any angle when given 3 sides , the largest angle subtends from the longest side.
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