Hard Math question

Question

Let a = 0.03291765

1/a cosh^-1(161.49/20.96)

Answer 1

Use the definition: cosh^-1(x) = ln(x+√(x²-1)) x ∈ [1,∞)

Where x = 161.49/20.96 ≈ 7.705

1/a ≈ 30.38

The rest is plug and play.