I am trying to solve an equation on Mathematica 12.1 to get angles in radians as part of some analysis:
forceToStrain[in_] := in/(51.76*10^9); strainFromTheta[in_] := ((in/(2*Sin[in/2])) - 1) // N (*thickness = 0.28 * 16 ply = 4.48 mm = 4.48*10^(-2 m)*) Solve[((x/(2*Sin[x/2])) - 1) == forceToStrain, x]
But I am getting this error:
Reduce::inex: Reduce was unable to solve the system with inexact coefficients or the system obtained by direct rationalization of inexact numbers present in the system. Since many of the methods used by Reduce require exact input, providing Reduce with an exact version of the system may help.
It doesn’t seem complicated as an equation as I can solve it by hand:
strainFromTheta[.00007] forceToStrain Output: 2.04167*10^-10 and 1.93199*10^-10
Can anyone tell me whether I could use a different function or rearrange the equation differently to get the angles?