sec (50/4)=2

Question

Solve the equation sec (50/4) = 2

Answer 1

There's an error in the question because there's no variable to calculate.

However, sec^-1(2)=cos^-1(½)=π/3.

So "50/4"=π/3 or 60° (also 5π/3 or 300°).

Perhaps 50/4 is 5θ/4?

5θ/4=π/3 or 5π/3 (60° or 300°),

θ=4π/15 or 4π/3 (48° or 240°).