Answer:
<W=62, <Y=65,<X=53
Step-by-step explanation:
The angles of every triangle always add up to 180
Hence
6b+11+6b+20+8b+9=180
20b+40=180
20b=180-40
20b=140
Dividing both sides by 20
b=7
Now
<YWX=6(7)+20
=42+20
=62
THEN
<XYW=8(7)+9
=56+9
=65
THEN
<WXY=6(7)+11
=42+11
=53
