What angle?

I turn 40 degrees clockwise, 70 degrees anticlockwise and finally 90 degrees clockwise. If I want to return to my original position by turning through the smallest possible angle, in which direction should I turn and what should the angle be?

Comments

  1. We can have clockwise as positive and anticlockwise as negative.
    Then we get:
    40-70+90 = 60

    This means that the angle should be 60 degrees clockwise

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