K khanguru New member Joined May 2, 2016 Messages 1 May 2, 2016 #1 these equations come from the least time problem need to solve for x x=30/ tan(90-i) 100-x=20/tan(90-r) sin(i)=4*sin(r) 3 equations 3 unknowns thx
these equations come from the least time problem need to solve for x x=30/ tan(90-i) 100-x=20/tan(90-r) sin(i)=4*sin(r) 3 equations 3 unknowns thx
D Deleted member 4993 Guest May 3, 2016 #2 khanguru said: these equations come from the least time problem need to solve for x x=30/ tan(90-i) 100-x=20/tan(90-r) sin(i)=4*sin(r) 3 equations 3 unknowns thx Click to expand... So where are you stuck? What are your thoughts? Please share your work with us ...even if you know it is wrong If you are stuck at the beginning tell us and we'll start with the definitions. You need to read the rules of this forum. Please read the post titled "Read before Posting" at the following URL: http://www.freemathhelp.com/forum/th...Before-Posting start with tan (90-Θ) = cot(Θ) = √[1 - sin2(Θ)] * 1/sin(Θ)
khanguru said: these equations come from the least time problem need to solve for x x=30/ tan(90-i) 100-x=20/tan(90-r) sin(i)=4*sin(r) 3 equations 3 unknowns thx Click to expand... So where are you stuck? What are your thoughts? Please share your work with us ...even if you know it is wrong If you are stuck at the beginning tell us and we'll start with the definitions. You need to read the rules of this forum. Please read the post titled "Read before Posting" at the following URL: http://www.freemathhelp.com/forum/th...Before-Posting start with tan (90-Θ) = cot(Θ) = √[1 - sin2(Θ)] * 1/sin(Θ)
