Answer:
The required equation which can be used to solve for the value of c is given by :

Explanation:
For better understanding of the solution, see the attached figure :
AC = 3 meter
CB = a meter
BA = c meter
m∠ABC = 50°
Now, to find the value of c.
In right angle triangle right angled at C, we need to find the length of hypotenuse, so using the sine rule in the ΔABC

Hence, the required equation which can be used to solve for the value of c is given by :
