Question

find the value of x​

Answer 1

Answer :

Let the angle BAC be y , now we have

= 110 + y = 180

As they lie on a straight line they form a linear pair

= y = 180 - 110

= y = 70°

Now also we know that the exterior angle is equal to the sum of opposite interior angles , so

= 70 + Angle ABC = 120

= Angle ABC = 120 - 70

= Angle ABC = 50°

Also , the angle ABC and x lie on a straight line so they form a linear pair , therefore

= 50 + x = 180

= x = 180 - 50

= x = 130°

Answer 2

x = 130°

sorry..

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