Question

pls solve this question...​

Answer 1

Step-by-step explanation:

Let BAC = Ф

then AcB = 2 Ф

Now ABC,

ABC + BCA + ACB = 180 

90 + Ф + 2 = 180

Ф = 30 

ACB = 2 ( 30 ) = 60 

Side opposite to the smallest angle is smallest

Hence BC is smallest 

Now 

Cos 2Ф = BC / Ac , Cos 60 = BC / AC , 1 / 2 = BC / AC , AC = 2BC