Question

(7) In ABC if side AB = side AC, BC = 20 cm. .
ZB = 42°, and seg AD I seg BC. Find the length of AD. (tan 42° = 0.9)​

Answer 1

Answer:

In △ABC , AB=AC

∴ the triangle is isoceles.

In an isoceles triangle the angles opposite to equal sides are equal.

∴∠A=∠C

Answer 2

Answer:

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