Super hard question....... :)

Question

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899

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+9675

You get the answer only if you know a lot about maths......

(WITHOUT any use of calculators.)

What is an approximation of $\tan{\left(\phi^{-1/2}\right)}$ where $\phi$ is the golden ratio and the tangent function is in radians?

MaxWong Jan 27, 2017

edited by MaxWong Jan 27, 2017
edited by MaxWong Jan 27, 2017

Guest · Answer 1 · 2017-01-27T03:36:23

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The answer? = ~1 radian!!.

Guest Jan 27, 2017

+9675

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unit is wrong but

$\tan\left(\dfrac{1}{\sqrt{\phi}}\right)\approx 1$ !!

Not 1 radian because 1/sqrt(phi) is an angle. So tangent of an angle is just a number.

MaxWong Jan 29, 2017