Question

26) In triangle ABC, if AB-BC and B

= 70°, ZA will be: *
O a. 70°
O b. 110°
O c. 55°
O d. 130°​

Answer 1

55degrees

Explanation:

Let the other angles of the triangle are x, x degrees. Since the sum of angles in a triangle is 180degrees, hence;

<A + <B+ <C = 180

x + 70 + x = 180

2x+70 = 180

2x = 180 - 70

2x = 110

x = 110/2

x = 55

SInce <A is equal to x, hence <A is 55degrees