Question

Angle AOC and angle BOC from the linear pair,a-b=20°,find the value a and b​

Answer 1

Hi,

angle AOC=a

angle BOC=b

according to problem given,

a and b are linear lair

a + b = 180°------( 1 )

a - b = 20° -------( 2 )

add equations ( 1 ) and ( 2 ), we get

2a = 200

a = 200 / 2

a = 100°

put a = 100°in equation ( 1 ), we get

100° + b = 180°

b = 180° - 100°

b = 80°

therefore,

a = 100°

b = 80°

I hope this help u.