What is a box plot? my teacher didn’t teach us that well about it.

a box plot or box-plot is a convenient way of graphically depicting groups of numerical data through their quartiles. Box plots may also have lines extending vertically from the boxes (whiskers) indicating variability outside the upper and lower quartiles, hence the terms box-and-whisker plot and box-and-whisker diagram. Outliers may be plotted as individual points.

A

Step-by-step explanation:

We know that x is an angle where 0<x<=90

so from the above equation

   -----(i)

and  -----(ii)

so we can find the value of f by solving these two equations.

by putting value of x from (i) into (ii)

So option A is the correct answer.