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The parsec is a unit of distance equivalent to about 3.26 light years or 31 trillion kilometres. It is used to measure the distances to stars, with kilo and mega parsecs being used for objects further away.
A parsec is based on the tangent ratio. The angle in question is that subtended at the distant object by the lines joining it to the earth and the sun, and the opposite side is the earth-sun distance - 1 astronomical unit (AU). The result is the distance of the object from the sun.
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What operations are used to find equal ratios?
Multiplication and division.
Does a ratio have the same or different units?
It varies which means that it depends on what type of ratios are used
When two ratios are equal what are they called?
They are called equivalent ratios.
Why are all aspect ratios identified as something to 1 or perhaps even recorded as a decimal value?
It allows the ratios to be compared more easily. But they are NOT all defined as unit ratios. My monitor has an aspect ratios of 4:3 or 16:9.
What is the Equivalent ratios for 3 to 3 12?
yes
