Question

3) The line AD bisects angle A in triangle ABC. If AD = 10, AC = 5, BD = 4 the what is the length CD?​

Answer 1

Answer:

Its a)6

Reason:

ok let me explain it easily, now take the ΔABC,

we can say that AB = BC since it is an isosceles triangle,

hence BC is also 5 if AB is 10,

and now take

BC = 10 where BD + DC = BC

hence, 4 + DC = 10

            ⇒DC = 10 - 4

               ⇒ DC = 6

Hence the answer is option a)6

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