How to solve equation with elliptic integral for modulous?

I have an equation

a_eq*sqrt(P1/B) = ellipticK(k1^2) - ellipticF(m1,k1^2)

where,

B = 1.3761E-4,

P1 = 0.4905,

a_eq = 9.5E-3,

k1 = sin{(theta +alpha +pi)/2} a

and

 m1 = arcsin[ sin{(alpha + pi )/2}/k1].

Here, I want to solve for theta and for that I have to solve for k1.

How to solve for k1 in this equation?

Answer 1

[Torsten]

Solve

a_eq*sqrt(P1/B) = ellipticK(k1^2) - ellipticF(arcsin[ sin{(alpha + pi )/2}/k1],k1^2)

for k1.

Once you have k1, you can solve for theta.

[Jay Prajapati]

Thank you ....