solve the equation x - 3 cos x = 0 by using a graphing utility. what is the solution? select the correct…

solve the equation x - 3 cos x = 0 by using a graphing utility. what is the solution? select the correct choice and fill in any answer boxes in your a. the solution set is {1.17}. (round to the nearest two decimal places as needed. use a comma to sep: b. there is no solution.

solve the equation x - 3 cos x = 0 by using a graphing utility. what is the solution? select the correct choice and fill in any answer boxes in your a. the solution set is {1.17}. (round to the nearest two decimal places as needed. use a comma to sep: b. there is no solution.

Answer

Explanation:

Step1: Use graphing utility

Graph the functions $y = x$ and $y=3\cos x$. The $x$-coordinate of the intersection - point(s) of the two graphs is the solution of the equation $x - 3\cos x=0$.

Step2: Read solution

When using a graphing utility (such as a graphing calculator or software like Desmos), we find the intersection point of $y = x$ and $y = 3\cos x$. Rounding to two decimal places, the $x$-value of the intersection point is approximately $x = 1.17$.

Answer:

A. The solution set is ${1.17}$