Question

pls tell fast and correct

options
80
100
16​

Answer 1

Given:-

ΔABC

AB=AC

∠A= (5x+20)°

∠B=∠C= $\frac{2}{5}$∠A

Required to find:-

∠A

Procedure:-

Let us add all the angles in triangle.

∠A + $\frac{2}{5}$∠A+ $\frac{2}{5}$∠A = 180°

$\frac{9}{5}$ ∠A = 180°

∠A $= \frac{5}{9} *180$ degrees

∠A = 100°

Hope it helped you.

Answer 2

Answer:

The answer is 100..I did the problem by substituting options..if u had any queries...check my answer once...

Step-by-step explanation:

hope it helps...

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