Question

Evaluate: sec^-1 (2/1.732)

Answer 1

1.732 is approx $\sqrt{3}$

Let sec⁻¹($\frac{2}{\sqrt{3} }$) = x

($\frac{2}{\sqrt{3} }$) = sec x

sec $\frac{\pi}{6}$ = sec x

So, x = $\frac{\pi}{6}$

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