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What is the length of AB in terms of a?

 

 Jul 20, 2020
 #1
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tan 30 =  1/sqrt3 =  a/AD

              AD = sqrt 3  *a

 

tan45 = 1 = a/DB

            DB = a

 

AD + DB  = AB   = sqrt3 * a  + a  = (1+ sqrt 3) a

 Jul 20, 2020

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