## Tag: trigonometry

44 How do I work with Root objects? 2012-10-28T00:01:24.480

34 Extract real part of a complex expression better than Re does 2012-03-21T10:48:29.380

30 How to express trigonometric equation in terms of of given trigonometric function? 2012-01-21T10:51:46.273

30 How to find the period of an arbitrary mathematical function? 2012-05-21T06:12:27.027

26 Transform Root objects into Trigonometric expressions 2014-07-05T17:58:15.737

23 Mathematica Sec and Csc 2012-07-02T09:07:24.467

23 Behavior of ArcTan when two zeros are given as arguments 2012-10-01T13:14:26.680

18 Generate a Unit Circle Trigonometry 2012-02-29T16:25:50.273

18 How do I introduce a new variable in a trigonometric equation? 2012-09-27T16:09:52.220

18 Speeding up trigonometric integral 2012-11-15T17:15:27.490

17 Laplace transform of $\frac{1-\cos (t)}{t}$ 2013-11-20T22:10:07.280

17 Why do certain values in ArcSin not fully evaluate? 2014-01-09T09:05:37.073

17 Solve symbolically a transcendental trigonometric equation and plot its solutions 2014-07-15T11:18:29.530

15 Factorize trigonometric matrices 2017-04-07T19:34:09.320

14 Simplify Sin[x]/x to Sinc[x] 2013-02-19T21:56:21.730

14 Transform an expression to remove the singularity 2014-02-20T18:06:48.870

13 Persistence length of a polymer chain 2012-08-01T19:13:18.483

13 Combining cosine or sine terms into a single cosine or sine 2013-08-13T20:39:30.427

13 Reduce[Sin[x]==0,x] splitting odd and even multiples of Pi 2020-01-07T10:38:00.650

12 Trying to prove that $x\sin(\frac{\pi}{x})\ge\pi \cos(\frac{\pi}{x})$ for $x\ge 1$ 2012-03-28T00:13:12.387

12 Mathematica 10 unable to Simplify[Cos[2 ArcCos[A]]] 2014-10-08T03:07:05.583

11 Why doesn't Mathematica expand Cos[x]^3 Sin[x]^2? 2012-04-18T20:50:31.893

11 Checking if two trigonometric expressions are equal 2012-06-26T13:10:40.973

11 How does Mathematica calculate $\sin(\pi/5)$? 2016-01-16T16:37:24.990

11 Simplifying Cosh[a] + Sin[a] + Sinh[a] 2018-11-28T11:03:48.043

10 Simplifying trig expressions containing Sqrt or Abs 2014-04-22T08:21:51.980

10 Evaluate trigonometric function 2016-12-24T18:23:44.807

9 How to expand tan(x+y) as normal form? 2012-11-28T06:17:40.543

9 How to make Mathematica simplify $\cos[(i + j + k)\pi]$ to $(-1)^{i+j+k}$? 2013-11-21T09:08:14.783

9 Need help on the proper use of a formula to produce a cambered airfoil 2015-05-27T23:39:02.053

9 How to solve this system of trigonometric trancendental equations over the reals? 2017-09-13T11:37:22.883

9 Computing the seven roots of a polynomial 2019-01-12T20:45:45.877

9 Why ArcTan[1, 0. I ] yields -1.5708+0. I? 2019-08-24T04:25:04.513

9 Why is the solution I obtained from Solve not verified in the original equation? 2020-08-22T20:09:52.620

8 Numerical solve question 2015-10-15T05:08:39.393

8 Replacing Tan[x] with Sin[x]/Cos[x] 2015-12-13T05:04:45.250

7 How to transform the result of this integral into powers of $\sin\,x$? 2012-10-17T15:31:22.383

7 Quantity and Trig functions 2013-04-19T23:01:09.233

7 How to automatically get rid of trig functions in an expression? 2013-09-25T19:16:56.947

7 Can I get Mathematica to recognize common series expansions of trigonometric functions? 2016-12-07T19:10:18.920

7 Integral that yields ArcTan function rather than ArcSin 2018-06-07T21:19:44.013

7 Fitting a Cos^2 function 2019-02-10T18:06:09.467

7 Finding points in a plane 2019-12-14T15:39:40.240

6 ArcTan and Compile 2013-09-06T17:22:12.383

6 Simplifying a trigonometric sum 2013-09-12T05:40:02.920

6 Apply Trig Identity to Transform Sum of Sinusoids into Phase-Shifted Cosine Function 2014-10-19T06:12:28.467

6 Prevent Simplify from using cot 2014-12-21T14:41:17.270

6 Why does Mathematica show 4095/4096 terms in TrigExpand? 2015-01-04T01:00:33.097

6 Evaluating complicated trig without resorting to numerical methods 2015-02-18T16:18:41.863

6 How can I make Mathematica do, ArcTanh[x] + ArcTanh[y] = ArcTanh[x+y/1+xy]? 2016-08-18T12:08:31.380

6 Mathematica in degrees mode 2016-12-21T13:09:09.230

6 PolarPlot shows nothing for a simple function 2017-04-06T14:04:19.757

6 Convert radian to degree and add ° 2017-05-29T09:35:56.657

6 Applying TrigToExp only for terms containing certain variables 2017-12-19T21:39:49.807

6 Prevent Trigonometric simplifications from using double angle and half angle formulae? 2018-08-06T12:02:52.647

6 Volume integration with a condition 2020-02-21T17:20:06.533

6 Solve can't solve my trigonometric equation—why? 2020-03-19T17:50:03.077

5 Solving a trig equation 2012-09-23T10:38:18.563

5 Arcs of rotation for angles 2013-04-29T00:45:18.157

5 How to check if a given expression is an "explicit algebraic number"? 2013-06-06T02:26:57.317

5 Simplifying an ArcTan expression 2013-07-15T15:43:56.857

5 ArcTan[z] and ArcTan[x,y], Restriction and Conversion 2013-10-23T13:28:18.197

5 Mathematica not recognising closed forms as specific values 2014-04-16T07:35:04.283

5 Infinite expression encountered when simplifying ArcTan sums although the result is finite 2014-07-15T22:28:52.870

5 Trigonometric simplification 2015-05-22T15:55:17.290

5 How to simplify 1 - Cos[2x] to 2 Sin[x]^2? 2015-07-24T15:12:05.047

5 Solve simple trig equation 2015-09-03T07:42:10.663

5 Simplify $\tan(\arctan(a) - \arctan(b))$ 2016-02-26T15:36:49.007

5 How to compute the integral of trigonometic function with multiple angle 2016-09-23T07:39:29.187

5 Expand wedge product 2017-10-02T21:46:11.230

5 Feature of quaternion Cos, Cot etc 2017-10-23T15:28:01.463

5 Alternative form of ArcSin[Sin[x]] 2018-11-06T18:48:13.600

5 Continuous non-piecewise equivalent of smoothstep function? 2018-12-21T13:16:22.937

5 Simplify $\tan^{-1}(\cot(a))$ to $\frac{\pi }{2}-a$ assuming $0<a<\frac{\pi }{2}$ 2019-02-10T14:24:22.213

5 Does Mathematica know about identity involving ArcSin(Cos(x))? 2020-01-14T23:14:58.627

5 Primitive of a continuous function over $\Bbb R$ 2020-02-14T16:50:32.897

5 Solving trigonometric equations with two variables in fixed range? 2020-12-20T17:19:40.840

5 NIntegrate Oscillating kernel 2020-12-30T13:15:49.710

4 ArcTan expressed as a radian fraction? 2012-04-05T21:12:18.763

4 Solving trig identities in specific terms 2012-10-10T15:11:04.023

4 Both Sin[x]==0 && Cos[x]==0 as a solution 2012-11-10T16:57:24.177

4 How to solve this trigonometric system of equations numerically? 2012-12-14T09:37:50.920

4 Simplifying a trigonometric expression 2013-08-10T17:39:23.767

4 Why Refine does not simplify Cos[2*Pi*FractionalPart[1/2*(i + j + k)]] to $(-1)^{i+j+k}$? 2014-02-03T07:47:38.457

4 Eliminate 3 Variable from 4 Equations 2014-09-03T00:00:25.880

4 Conversion of Sine to Cosine 2014-12-07T15:23:35.053

4 Transforming expressions in terms of Csc and Sec to expressions in terms of Sin and Cos 2015-03-16T11:15:31.343

4 Inconsistent results for symbolic trigonometric integral 2016-01-02T18:01:01.413

4 Strange behavior of ArcTan 2016-01-06T13:33:54.957

4 Why does Mathematica gives a solution which is not in the domain of the cot function? 2016-02-22T17:35:59.867

4 Between Expand and TrigExpand 2016-09-13T17:50:02.707

4 Amplitude of a Sinus, Simple question 2016-10-17T12:50:22.430

4 Trigonometry and Solve 2016-12-06T12:23:54.023

4 How to simplify this equality between ArcCos and ArcCsc? 2017-01-08T20:45:20.893

4 Standard trig identity isn't simplifying 2017-03-01T07:48:11.783

4 Is there a solution for this equation? 2017-03-05T19:55:41.067

4 Sign change of sine function 2017-04-22T22:32:10.983

4 simplify (1 + 2 Cos[2 x])/(Sqrt - 2 Sin[2 x]) 2017-04-25T06:24:47.617