Video: Fossil: Definition, Types, Characteristics & Examples. Fossils provide scientists with many clues about Earth's history, offering evidence of dinosaurs and strange plants that existed in the past. This lesson will define a fossil, look at different types and characteristics of fossils, and then describe how fossils are formed.
The final result of the dot product process can be: 1  Zero: we don't have any growth in the original direction. 2  Positive number: we have some growth in the original direction. 3  Negative number: we have negative (reverse) growth in the original direction.
The Dot Product gives a number as an answer (a scalar, not a vector). The Dot Product is written using a central dot: a Â· b. This means the Dot Product of a and b. We can calculate the Dot Product of two vectors this way: a Â· b = |a| Ã |b| Ã cos(Î¸) Where: |a| is the magnitude (length) of vector a. |b| is the magnitude (length) of vector b. Î¸ is the angle between a and b. So we multiply the length of a times the length of b, then multiply by the cosine of the angle between a and b.