Question

in the given figure find the value of x
plz help me with this and give explanation too.​

Answer 1

Answer:

x=60

in OBC a+b+60=180 thus a+b=120

now in ABC angle B= 180=2a and angle C =180-2b

so 180-2a+180+2b+x=180

gives x=2a +2b -180

putting 2a+2b= 240

we get x=60