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|dw:1380238750511:dw|

are these in degrees?

Is that a right angle?

yeah

yeah they are in degrees

3x-9=90
solving for x gives x=33
making the second one 40 degrees

That is if that 3x-9 is the angle of the vertical line to the ground and the angle is "right"

3x-9 is a right angle

|dw:1380239569613:dw|

so i would go
3*23-9 = 60
23+7=30

Yep should be that.

right angels give you 90 derees so it should add up to 90 degrees