H herecomessuccess New member Joined Sep 20, 2011 Messages 2 Sep 20, 2011 #1 I need to find the lengths of BC and CE. If I knew the interior angles I could use the cosine rule but they haven't given me any angles to work with. Attachments 15.JPG 34.8 KB · Views: 2 Last edited: Sep 20, 2011
I need to find the lengths of BC and CE. If I knew the interior angles I could use the cosine rule but they haven't given me any angles to work with.
pka Elite Member Joined Jan 29, 2005 Messages 11,978 Sep 20, 2011 #2 herecomessuccess said: I need to find the lengths of BC and CE. If I knew the interior angles I could use the cosine rule but they haven't given me any angles to work with. Click to expand... You have similar triangles. \(\displaystyle \Delta ABC\sim \Delta EDC\)
herecomessuccess said: I need to find the lengths of BC and CE. If I knew the interior angles I could use the cosine rule but they haven't given me any angles to work with. Click to expand... You have similar triangles. \(\displaystyle \Delta ABC\sim \Delta EDC\)
H herecomessuccess New member Joined Sep 20, 2011 Messages 2 Sep 20, 2011 #3 Ohhh didn't even realise. so daft. thanks