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Solving an equation in Mathematica?

Posted 4 months ago
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So I am solving for an equation for projectile calculation and I have come down to a single equation, however, I want to solve it in terms for a variable. This variable is the unknown and the rest of the variables are inputs. equation in mathematica

equation I solved for

I am not able to figure out what I am doing wrong to solve for the equation. I replaced psiF with x in Mathematica. Please help me solve this! Thank You.

2 Replies
Posted 4 months ago

Try

Simplify[Reduce[
  j==(a*Sin[x])+(((i-(a*Cos[x]))/(Cos[x]))*Sin[x])+
  (((i-(a*Cos[x]))/(v*Cos[x]))^2*49/10),x]]

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