Question

Use a graph to solve the equation on the interval [- 2π, 2π].

tan x = 1

Answer 1

Step 1:

The equation is on interval .

The function  .

Draw the table for different values of .

Step 2:

Graph the  function .

Draw the co-ordinate plane.

Plot the points found in the table and connect the points.

Observe the graph,

The solutions of  on are .

Solution:

The solutions are .