adrianamunoz adrianamunoz

22-07-2018
Mathematics

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need help on solving problems with comon tangents

need help on solving problems with comon tangents class=

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adiattaluri adiattaluri

22-07-2018

First, find angle ECD using tan^-1(6/4), we get angle as 56.31

Now by proportionate, angle ECD and angle EBA are equal.

Hence you can use tan to find AB i.e, AB = 18/tan(56.31)= 12

Therefore, AB = 12

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