25 Should word problems be reasonable? 2014-11-18T19:30:28.697

24 The best way to introduce trigonometric functions in a rigorous analysis course 2014-04-05T20:54:00.717

21 Pi or Tau? How should the circle constant be taught? 2014-03-19T18:05:17.470

17 Answers in exact form (e.g. including radicals) vs. Decimal Approximations 2014-03-14T15:40:56.193

17 Memorizing Trig Identities 2017-05-04T21:06:07.353

16 Why do we conventionally treat trig functions as going anti-clockwise from the right? 2015-10-29T21:02:57.187

16 How to convince my student that this is an Identity : $\sec^2x-\tan^2x=1$? 2015-11-27T10:46:33.783

13 Why are degree angle-measurements taught? 2014-04-10T20:25:38.450

11 Rigorously defining the concept of an angle for high school students 2016-01-03T14:20:36.683

10 The origins of $\mathrm{cis}(\theta)$ 2014-09-17T12:29:48.217

9 How to motivate the geometric definition of trigonometric functions on the unit circle 2014-05-25T16:28:42.347

9 Examples of Mathematical Beauty in School Mathematics 2015-04-11T01:07:23.287

9 May we permit identities to be established by equivalent equations? 2017-07-11T15:48:03.887

8 Examples of when $\tan(x) = \frac{\sin(x)}{\cos(x)}$ is useful 2014-10-03T20:16:18.330

8 How to convince the students of grade 8 that $\sin 90^\circ =1$? ( calculator not allowed ) 2014-11-04T16:14:33.373

8 Rules to eliminate erroneous solutions in Trig equations? 2016-04-30T13:14:40.987

8 Applying inverse trigonometric functions 2017-01-26T19:23:32.977

7 Unit circle vs. ratios of right triangles vs. wave functions for introducing trig functions 2014-04-27T18:02:48.830

7 Why teach reference angles? 2017-11-09T20:00:28.793

5 Trigonometric ratios 2014-04-30T02:36:12.587

5 The values of trigonometric ratios 2014-06-01T17:01:19.917

5 What purpose do these kinds of question serve in mathematical training? 2015-04-14T06:36:25.507

5 Trigonometric angles of rotation 2015-12-11T20:00:43.223

4 Proving trigonometric identities 2014-05-15T12:18:00.727

4 Necessary trigonometric identities for k-12 students 2016-03-27T21:49:25.590

3 How are the basic Trigonometric functions introduced to students? 2016-03-04T18:18:41.400

3 Resources on 3D transforms, vectors, coordinate systems 2016-05-08T23:20:39.853

2 Explaining trigonometric equations 2015-12-09T11:48:07.187

2 How to explain this trigonometric problem properly? 2016-11-07T13:16:52.847

2 Trig Tables and Right Triangles 2017-05-25T17:48:09.107

1 Solving a Polar set of equations algebraically? 2016-12-02T17:01:51.530