- #1
PatternSeeker
- 19
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I need directions regarding methods that I could use for the following type of problem:
I am given the following scenario:
Observers consistently estimate objects as 20% shorter than they really are in the "y" dimension. They accurately estimate objects in the "x" dimension.
** error in estimated lengths in the y dimension, % error y = -20 % of physical lengths.
** error in estimated lengths in the x-dimension, % error x = 0% of physical length
Observers also consistently overestimate physical angles between "x" dimension and directions between "x" and "y" dimension.
Let physical angle = σ
Let estimated angle = β
** angle β = arctan ((sin α (% error x + 100))/(cos α ( % error y + 100))
*** Angles α and β vary between 0 deg to 90 degrees. The change between the
two is not constant, however. It will be greatest at a particular value of angle α.
QUESTION: If the physical length y is underestimated by 20 %, at which physical angle α
(between 0 and 90 degrees) will the change between angle β and angle α be
the greatest?
How would you suggest I approach this problem? Should I use differential calculus?
By the way, my background in math is pretty basic - I took undergraduate calculus a few years ago.
I am given the following scenario:
Observers consistently estimate objects as 20% shorter than they really are in the "y" dimension. They accurately estimate objects in the "x" dimension.
** error in estimated lengths in the y dimension, % error y = -20 % of physical lengths.
** error in estimated lengths in the x-dimension, % error x = 0% of physical length
Observers also consistently overestimate physical angles between "x" dimension and directions between "x" and "y" dimension.
Let physical angle = σ
Let estimated angle = β
** angle β = arctan ((sin α (% error x + 100))/(cos α ( % error y + 100))
*** Angles α and β vary between 0 deg to 90 degrees. The change between the
two is not constant, however. It will be greatest at a particular value of angle α.
QUESTION: If the physical length y is underestimated by 20 %, at which physical angle α
(between 0 and 90 degrees) will the change between angle β and angle α be
the greatest?
How would you suggest I approach this problem? Should I use differential calculus?
By the way, my background in math is pretty basic - I took undergraduate calculus a few years ago.