Neka je
![\overline{OA}](/media/m/1/0/4/104359455117bb4ea7ab044d1f42a4ad.png)
promjer i
![\overline{OB}](/media/m/1/9/4/194d1eb9451d850c84fe696dcdf025d2.png)
tetiva kružnice
![k](/media/m/f/1/3/f135be660b73381aa6bec048f0f79afc.png)
polumjera
![R](/media/m/4/d/7/4d76ce566584cfe8ff88e5f3e8b8e823.png)
,
![C](/media/m/5/a/b/5ab88f3f735b691e133767fe7ea0483c.png)
sjecište pravca
![OB](/media/m/5/0/3/503e9123196089d1244989e870075ca4.png)
i tangente na
![k](/media/m/f/1/3/f135be660b73381aa6bec048f0f79afc.png)
u točki
![A](/media/m/5/a/e/5ae81275ee67d638485e903bdc0e9cde.png)
,
![T](/media/m/0/1/6/016d42c58f7f5f06bdf8af6b85141914.png)
točka na dužini
![\overline{OB}](/media/m/1/9/4/194d1eb9451d850c84fe696dcdf025d2.png)
takva da je
![\left\vert OT \right\vert = \left\vert BC \right\vert](/media/m/9/8/3/9836511e7e4ed73ce66f2c69730a7277.png)
i
![T^{\prime}](/media/m/8/f/b/8fbf9edc85ea653262acabc61eb99d84.png)
projekcija od
![T](/media/m/0/1/6/016d42c58f7f5f06bdf8af6b85141914.png)
na
![\overline{OA}](/media/m/1/0/4/104359455117bb4ea7ab044d1f42a4ad.png)
. Izrazite
![y = \left\vert T^{\prime}T \right\vert](/media/m/e/b/0/eb0af2fbd97dc62f4f490bdb1eaf7e68.png)
kao funkciju od
![x = \left\vert OT^{\prime} \right\vert](/media/m/8/8/e/88e9b14ab462afe0a39aea3f75dc1609.png)
.
%V0
Neka je $\overline{OA}$ promjer i $\overline{OB}$ tetiva kružnice $k$ polumjera $R$, $C$ sjecište pravca $OB$ i tangente na $k$ u točki $A$, $T$ točka na dužini $\overline{OB}$ takva da je $\left\vert OT \right\vert = \left\vert BC \right\vert$ i $T^{\prime}$ projekcija od $T$ na $\overline{OA}$. Izrazite $y = \left\vert T^{\prime}T \right\vert $ kao funkciju od $x = \left\vert OT^{\prime} \right\vert$.