A security camera fixed on a pole points towards the North-West. It swings through \(180^\circ\) clockwise and then swings back through \(45^\circ\) anticlockwise. In which direction does the camera point now?
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → East
The eight compass directions are \(45^\circ\) apart; clockwise they run North → North-East → East → South-East → South → South-West → West → North-West.
\(180^\circ\) clockwise from North-West: it points the opposite way, South-East
\(45^\circ\) anticlockwise from South-East: one step back, East
Net turn: \(180^\circ-45^\circ=135^\circ\) clockwise from North-West (North, North-East, East) gives the same result
The camera now points East.
