Let’s recall the concept.
- First Quadrant covers 90 Degree
- Second Quadrant covers 180 Degree(Half of a circle or semicircle)
- Third Quadrant covers 270 Degree(1/3 of complete circle)
- Fourth Quadrant covers 360 Degree(Complete circle)
An important fact related to directions is “Two Degree can only be computed, if they are in the same direction, whether Clockwise or Anticlockwise.” i.e. 45 Degree (Anticlockwise) – 30 Degree (Anticlockwise) = 15 Degree (Anticlockwise)
Take some puzzles based on this...
Step1: Add same directional degree first as 45+180 = 225 degrees (Clockwise)
Step2: Anticlockwise Direction is 270 degrees
Step3: Subtract Anticloclwise –Clockwise as 270-225= 45 degree
Step4: In the complete Journey, he goes 45 degrees extra in Anticlockwise direction
Step5: A man is facing west, by going 45 degrees in anticlockwise, he will face southwest as shown below:
Step1: He turns clockwise 90 degrees and Anticlockwise 135 degrees. Subtract both as
Step2: Man facing North West as
Step3: After 45 degrees turn, he stands straight in West Direction.
Step1: First add the same directional degrees
Step2: Subtract Anticlockwise and Clockwise degrees
Step3: A man facing North- west. When he move 180 degrees anticlockwise, he will reach in the fourth quadrant in South -East direction as shown below:
Step1: Clockwise turn =100 degrees, Anticlockwise Turn = 145 degree. Subtract Both as
Step2: I am facing towards, by turning 45 degrees Anticlockwise, I am facing North-East direction now as shown:
Step1: Two cases evolved here Sunrise and Sunset
Step2: During Sunrise, the Sun rises from the East. This way he is going to the South
Step3: During sunset, the Sun sets in the West. This way he is going to the North
Step4: He is going in the North or South considering both cases.