Lab $2$: Compute Angles

Question $1$: Design a Python program. This program prompts user to enter $3$ numbers representing the length of $3$ edges $($for example $a,b,c$ in the following graph$)$ and outputs the angles $($for example $A,B,C$ in the following graph$).$

Given the length of $3$ edges of a triangle, you can compute the angles using the following formula:

$A=$acos$(\frac{a**a-b**b-c**c}{-2**b**c})$

$B=$acos$(\frac{b**b-a**a-c**c}{-2**a**c})$

$C=$acos$(\frac{c**c-b**b-a**a}{-2**a**b})$