# ‼️need help in maths‼️

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#1
How do u do this?
0
2 years ago
#2
Do you know how to do cosine rule??
0
2 years ago
#3
(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.
1
2 years ago
#4
(Original post by Btsmia)
How do u do this?
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
1
#5
Thank u I get it now
0
#6
(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
Can u help
Can u help me with this too?
0
2 years ago
#7
(Original post by Btsmia)
Can u help
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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