Question

please help me and solve this sum ​

Answer 1

Answer:

first answer is 60

and

second answer is40

Answer 2

Answer:

(i). since it is an isosceles triangle 2 sides are equal and angle opposite to equal sides are equal.... therefore, x=40 degree

(ii). in a triangle sum of three angles is 180 degree

let triangle be abc

a=100 degree

ab=ac

so

a+b+c=180

100+b+c=180

b+c=180-100=80

since angle opposite to equal sides are equal

therefore b=c

so

b+c=80

2b=80

b=40

b=x=40