Brainee Posted March 22, 2023 Share Posted March 22, 2023 What is the purpose of cosecant, secant and cotangent since you can use sine, cosine and cotangent to find sides in a right angled triangle? If it is so. Link to comment Share on other sites More sharing options...
joigus Posted March 22, 2023 Share Posted March 22, 2023 4 minutes ago, Brainee said: What is the purpose of cosecant, secant and cotangent since you can use sine, cosine and cotangent to find sides in a right angled triangle? If it is so. Stenography 1 Link to comment Share on other sites More sharing options...
mathematic Posted March 22, 2023 Share Posted March 22, 2023 You could ask what's the purpose of anything in mathematics? Link to comment Share on other sites More sharing options...
swansont Posted March 22, 2023 Share Posted March 22, 2023 41 minutes ago, Brainee said: What is the purpose of cosecant, secant and cotangent since you can use sine, cosine and cotangent to find sides in a right angled triangle? If it is so. Not every problem is finding the sides of a right triangle. There are solutions to integrals that use the other trig functions. Link to comment Share on other sites More sharing options...
studiot Posted March 22, 2023 Share Posted March 22, 2023 1 hour ago, Brainee said: What is the purpose of cosecant, secant and cotangent since you can use sine, cosine and cotangent to find sides in a right angled triangle? If it is so. Here is a section of questions from an old trig textbook, involving the use of the secant, cosecant and cotangent. If you look in tables of standard integrals you will find these fromulae employed to solve the integrals, as swansont says. Link to comment Share on other sites More sharing options...
studiot Posted March 23, 2023 Share Posted March 23, 2023 In case you think this is purely academic showing off, here is a practical use of the cotangent, much used in cartography and surveying. https://en.wikipedia.org/wiki/Tienstra_formula 1 Link to comment Share on other sites More sharing options...
Brainee Posted March 23, 2023 Author Share Posted March 23, 2023 What is difference in work area between sin, cos, tan and csc, sec, cot? Link to comment Share on other sites More sharing options...
studiot Posted March 23, 2023 Share Posted March 23, 2023 37 minutes ago, Brainee said: What is difference in work area between sin, cos, tan and csc, sec, cot? I know you can write more than repeating you first very short question. This one sided communication is becoming very tiresome. Link to comment Share on other sites More sharing options...
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