The angles x°, a°, c° and (π − b)° are indicated in the figure given above. Which one of the following is correct?
1
x = a + c − b
2
x = b − a − c
3
x = a + b + c
4
x = a − b + c
The angles x°, a°, c° and (π − b)° are indicated in the figure given above. Which one of the following is correct?