answer of 9, 10, 11 and 12
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no
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no i dont know
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9. Supplement of an angle = 130
o
Let the angle be x
o
Then, x
o
+130
o
=180
o
∴x=50
o
Now, complement of the angle = 90
o
−x=90
o
−50
o
=40
o
O this one is refer as degree.
10. It is given that: 90−x=180−3x⇒2x=90⇒x=45
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