Graphs of Trigonometrical Expressions

Extract

A Study of the questions on this subject set in the recent geometry papers of the London Intermediate Examinations will show that there is considerable danger that what should be the chief aim in the subject may be subordinated to the subsidiary aim of affording practice in evaluating and plotting results.

The chief aim should be, I think, a careful study of those important curves in Physics and in Higher Mathematics which best lend themselves to trigonometrical rather than to algebraic treatment. In the actual plotting of these curves much varied practice in the use of tables will, of course, be obtained; but this should be considered of distinctly minor importance.