Question

Can anyone find the value of b?

Answer 1

b=56

Explanation:

first angle is 43

second angle is 180-99=81

the sum of angles of triangle= 180

b+43+81=180

b=180-124=56

Answer 2

`b=56`

Explanation:

Angles in a straight line add up to 180°.

`180-99`

`=81`

Angles in a triangle add up to 180°.

`180-81-43=b`

`56=b`