TRIGONOMETRIC EQUATIONS Solving Inequalities (Page 4 of 6)

Use CALC zero to find the two x-intercepts. For the first intercept, we will use a left bound of 60, a right bound of 90, and a guess of 70.

 2nd CALC key. 2: menu selection. 60 ENTER key. 90 ENTER key. 70 ENTER key. Calculator screen image.

For the second intercept, we will use a left bound of 270, a right bound of 330, and a guess of 300.

 2nd CALC key. 2: menu selection. 270 ENTER key. 330 ENTER key. 300 ENTER key. Calculator screen image.
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