Delta means "change in"
For example: Delta T means "change in temperature". To calculate this it would be (final temperature) - (initial temperature)
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The delta triangle is often used as a symbol to represent change in mathematics and science. It is written as the Greek letter delta (Δ) and typically denotes a difference or a change in a variable or quantity.
In equations involving velocity, the triangle symbol typically represents the Greek letter "delta," which signifies a change in the given quantity. So, when you see the triangle symbol in a velocity equation, it usually denotes a change in velocity or acceleration.
Delta G (written triangle G) = Delta H -T Delta S
A delta is a triangle-shaped island at the mouth of a river that is formed from river sediments. Deltas are typically fertile areas due to the accumulation of nutrient-rich soil deposited by the river.
It is called a delta.
"Delta" - the uppercase Greek letter delta, which looks like a triangle - is often used in the sense of "difference". You are simply supposed to calculate the difference between two different values of "v" (where "v" might stand for the velocity).