Question

In the given abc, abd = 40o, ab = bc and ad is the bisector of bac. The measure of adc is

Answer 1

Applying cosine rule on ∠BDA, we get:

c2=q2+p2−2pqcos45o

Applying sine rule on △BDA, we get:

csin45o=psinx

Applying sine rule on △ADC, we get:

psin15o=qsin30o

Since only the ∠x needs to be found, without loss of generality we can assume c=1

Now we have enough equations to find the value of x.

Answer 2

Answer:

Step-by-step explanation:

find value of x