Doug Simms

the official Doug Simms Online site

Note: My new Math Tutoring site is now found at:


If you or your child are studying high school Trigonometry, the link on the right leads to a page which illustrates the use of the five basic Trig formulas.

This site is to be used as a free online tutoring service. Select the topic you wish to study, view the video as many times as you want, and print the Example sheet, the Exercise sheet and the Answers sheet.

Use the Example sheet as a model to help you answer the questions on the Exercise sheet. Then use the Answers page to correct your own work. Return to this site whenever you want a review, or to explore other topics in high school Math.

The only commercial aspect of the site is the presence of advertisements. You will not be charged to use the site or to view the correct answers.

The site is not complete for now, but will be expanded (each time I complete the filming of a new video) to include all of Trigonometry, the four operations on Fractions, and eventually every topic of high school Math.

Grade 7:


Grade 8:

Equations & Inequalities I

Grade 10:

Trigonometry I