â¢ IDEA (noun). The noun IDEA has 5 senses: 1. the content of cognition; the main thing you are thinking about. 2. a personal view. 3. an approximate calculation of quantity or degree or worth. 4. your intention; what you intend to do. 5. (music) melodic subject of a musical composition. Familiarity information: IDEA used as a noun is common.
The two points on the earth's surface where the axis emerges are called the 'NORTH POLE' and the 'SOUTH POLE.' Any line pointing along the Earth's surface towards the North Pole is said to be pointing 'north.' Any line pointing along the Earth's surface towards the South Pole is said to be pointing 'south.' 'East' is at right angles to north in a ...
Three-figure bearings. Imagine that you are in the middle of the ocean. You are lost and you cannot see any land. You radio for help and are told to turn 125Â° clockwise. But 125Â° from where? Which direction should you be facing in the first place? One sensible idea is to start by facing north. This is the way that 3-figure bearings work. Always start by facing north, and always move in a clockwise direction. Angles of less than 100Â° are written with a '0' in front, to make them a 3-figure bearing. For example, 060Â°, 021Â°. Finding the bearing of A from B. Here is an example. Imagine that you are at point B. You need to travel to point A. On which bearing should you travel?