Question

please help me with this question ​

Answer 1

Answer:

valu of 3y is

180-30

=150

Answer 2

solution↓

let's all line cut point O

• we see that angle COE=FOD=30° ( HEADING ANGLE)

• angle AOF+FOB=180° (LINEAR PAIR ANGLE)

• angle AOF=90° (given)

• it means angle
• angle 90°+FOB=180°

• angle FOB=180°-90°

• angle FOB=90°

• angle DOB=FOB-FOD

• angle DOB=3y (given)

• put value

• 3y=90-30

• y=60/3

• y=20

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• y value =20

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I hope it helps you