In Fig. 7.58, ΔABC is a triangle such that ABAC=BDDC,∠B=70∘,∠C=50∘. Find ∠BAD.

In Fig. 7.58, ΔABC is a triangle such that ABAC=BDDC,∠B=70∘,∠C=

1.	In Fig. 7.58, ΔABC is a triangle such that ABAC=BDDC,∠B=70∘,∠C=50∘. Find ∠BAD.
Answer» In Fig. 7.58, $Δ A B C$ is a triangle such that $\frac{A B}{A C} = \frac{B D}{D C}, ∠ B = 70^{\circ}, ∠ C = 50^{\circ}$ . Find $∠ B A D$ .