Multiple Choice Question: A 3-degree simple curve has an external distance of 23 m. What is the length of the long chord?

A 3-degree simple curve has an external distance of 23 m. What is the length of the long chord?

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Orphaned Multiple Choice Questions (MCQ) due to changes of exam system.

Find the value of $x = \sin^2 \varphi - \cos^2 \varphi$ if $\varphi$ is $\pi / 4$ or $45^\circ$.
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Solve for $x^2$ if $48^{1/x} = 4 \times 3^{1/x}$.
The vena contracta of a sharp-edged hydraulic orifice usually occurs:

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