radians, degrees, gradians bug report

11072016, 12:48 PM
Post: #1




radians, degrees, gradians bug report
Not sure if this is a bug or not, but:
solve([(h/x1) = (tan(a1)),(h/(x1+x2)) = (tan(a2))],[h,x1]) returns: [[x2*tan(a1)*tan(a2)/(tan(a1)tan(a2)),x2*tan(a2)/(tan(a1)tan(a2))]] in degrees and gradians mode, but returns: [[(x2*cos(a1)*sin(a1)*sin(a2)^2x2*cos(a2)*sin(a1)^2*sin(a2))/(2*cos(a1)*cos(a2)*sin(a1)*sin(a2)+2*sin(a1)^2*sin(a2)^2sin(a1)^2sin(a2)^2),x2*tan(a2)/(tan(a1)tan(a2))]] in radians mode. All other setting the same. Simplification set to minimum or none returns the same result. Simplification set to maximum, angle set to radians returns: [[(x2*cos(a1)*sin(a1)*sin(a2)^2x2*cos(a2)*sin(a1)^2*sin(a2))/(2*cos(a1)*cos(a2)*sin(a1)*sin(a2)+2*sin(a1)^2*sin(a2)^2sin(a1)^2sin(a2)^2),(x2*cos(a1)^2*cos(a2)^2+x2*cos(a1)^2x2*cos(a1)*cos(a2)*sin(a1)*sin(a2))/(2*cos(a1)^2*cos(a2)^2cos(a1)^2+2*cos(a1)*cos(a2)*sin(a1)*sin(a2)cos(a2)^2)]] I didn't go thru all the math, but I believe all results are mathematically equivalent. I just would have expected the simplification process to be independent of the angular unit setting. road 

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