How solve this trigo system ?

09182017, 05:48 PM
(This post was last modified: 09182017 06:01 PM by Dieter.)
Post: #7




RE: How solve this trigo system ?
(09182017 08:56 AM)ggauny@live.fr Wrote: I would like solve my exercize with my Prime but I dont' know It you want to use a solver there is another, shorter solution. This is a nonlinear equation system with two unknowns. One way to solve such a system is the substitution method which has already been discussed. Another approach is solving both equations for the same variable, i.e. for x or y, and set equation1 = equation2: y = arccos(cos x – 0,5) y = arcsin(0,375 / sin x) => arccos(cos x – 0,5) = arcsin(0,375 / sin x) Now any decent solver should be able to solve this (x=24,2952° => y=65,7048°). Which does not mean that any solver will return all possible solutions. ;) AFAIK on the Prime you can also find the intersection of both graphs, which should return the same result. Dieter 

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Messages In This Thread 
How solve this trigo system ?  ggauny@live.fr  09182017, 08:56 AM
RE: How solve this trigo system ?  Gerson W. Barbosa  09182017, 10:12 AM
RE: How solve this trigo system ?  ggauny@live.fr  09182017, 10:45 AM
RE: How solve this trigo system ?  Gerson W. Barbosa  09182017, 10:55 AM
RE: How solve this trigo system ?  Gerson W. Barbosa  09182017, 11:28 AM
RE: How solve this trigo system ?  Dieter  09182017, 12:46 PM
RE: How solve this trigo system ?  Dieter  09182017 05:48 PM
RE: How solve this trigo system ?  AlexFekken  09192017, 06:36 AM
RE: How solve this trigo system ?  Albert Chan  01312020, 10:48 PM
RE: How solve this trigo system ?  Dieter  09192017, 06:30 PM
RE: How solve this trigo system ?  ggauny@live.fr  09222017, 07:27 AM
RE: How solve this trigo system ?  Gerson W. Barbosa  09222017, 05:05 PM

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