geometry
posted by Cindy .
find the missing value to the nearest hundredth Tan ___ = 73
I just don't get these!

You want to find the angle θ such that
tanθ = 73
Another way of writing that is by using the inverse function
θ = arctan 73
or
θ = tan^{1}73
Just as you need a calculator or a table to find tan 25°, you need a calculator or table of arctan to find arctan 73
arctan(73) = 89.21°
tan is just another operator, like + or  or * or √. It has an inverse:
 or + or / or sup>2 or arctan.
If someone asked
3 * ___ = 12
you find the answer by using the inverse operation:
___ = 12/3
Same with sin cos tan, etc. Use the inverse operation.