There is a faulty clock — the minute hand doesn't rotate by the angle $2\pi/3600$ each second but by a different fixed angle. The coordinates of the center of the clock are $(0, 0)$. The length of the minute hand is $h$ units.
One endpoint (the tail) of the minute hand is always located at the clock center(fixed), the other endpoint (the tip) is initially located at the point $(0,h)$. One second later, the tip is at distance of $s$ units above the $x$-axis, i.e. the $y$-coordinate of this endpoint is equal to $s$.
Where will be the minute hand (its $y$-coordinate) after $k$ seconds?
What I did is $h\cos\left[\arccos\left({\dfrac{s}{h}}\right)k\right]$ - but answer graded wrong in yesterday test . I cannot wait for Test Discussion so anyone up for it ?