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Can gps determine speed of vehicle and does a gps account for the change in elevation when determining the distance traveled?
Yes. Global positioning satellite systems pinpoint their position using time and distance calculations received from the various GPS satellites. If a GPS systems pinpoints a location at a certain time, and pinpoints a different location at a certain time later, all that is needed to determine how fast the GPS got from the first point to the second is simple math.
Can you give a sentence using the word approximate?
I had to approximate the distance to the campground because my GPS is broken.
What is the most common way trig is used in everyday life?
Global Positioning Systems (GPS) use trigonometry. There are a number of satellites orbiting the earth. The GPS uses the time signals sent by these satellites to establish the distance to the satellites. Trigonometry is then used to find the location of the GPS unit.
Why are satellites useful in everyday life?
They are used to reflect radio waves to improve long distance communications and they are used for GPS location systems
How is an exact position in space identified?
There are several methods.You need a reference point (the origin. For an n-dimensional space you will need a set of n axes and n measures which define the position with regard to origin. The axes need not be orthogonal (at right angles) as can be seen from isometric graph paper. The measures need not all be distances, they can comprise one distance and the remainder being angles.Alternatively, you can have many reference points and directions from these reference points to the position. This is the system used by early cartographers for making maps before satellite mapping became possible. The reference points were called triangulation points, and as they moved across the region being mapped, they identified new triangulation points (whose positions they had worked out) so that they had these reference points reasonably near the position to be identified.Yet another method was to have a set of reference points and distances from these reference points to the position. This is the system used for GPS where the reference points are 3 or more satellites and the measures are distances to the position. Actually, the measures are of time but given the speed of light in the Earth's atmosphere, converting time to distance is trivial. A lot of trigonometry follows.
