find b , if b-3a=40°
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Step-by-step explanation:
given :- b-3a = 40°
b = 40° + 3a. ....(1)
b = 40° + 3a.
from figure it is clear that both angles make 360°
therefore
a + b = 360°
from equation 1
a + 40+ 3a = 360°
a +3a = 360-40
4a = 320
a = 320/4
a =80°
put this value in equation 1
b = 40° + 3(80)
b = 40+240
b = 280°
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Answered by
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Answer:
a= 80°
b= 280°
..
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