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1) Parallel to x axis, teta = 0,
Slope or inclination = tan teta= tan 0 = 0
2) teta= 90
Slope = not defined
3) teta = 90
Slope= not defined
4) teta= 0
Slope = 0
Note: teta is always measured with respect to positive direction of x-axis
Slope or inclination = tan teta= tan 0 = 0
2) teta= 90
Slope = not defined
3) teta = 90
Slope= not defined
4) teta= 0
Slope = 0
Note: teta is always measured with respect to positive direction of x-axis
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