Question

help please 15 points

Answer 1

angle AOC = 85 degree and

angle AOC = angle AOB + angle BOC

85=4x-15 +2x+ 10

85 = 6x -5

6x = 90

$x = \frac{90}{6}$

x=15

putting the value of x in the equation of the angleAOB and angle BOC,we get:-

angle AOB = 4x-15

= 4×15-15

=60-15

angle AOB = 45 degree.

angle BOC =2x+10

= 2×15+10

= 30+10

angle BOC = 40 degree.