- Class: 5H: BC Calculus
- Author: Peter Atlas
- Text:
__Calculus__Finney, Demana, Waits, Kennedy

Given the unit circle with PO = 1, answer the following questions:

- Express PQ in terms of \(\theta\).
- Express QO in terms of \(\theta\).
- Relate the lengths QO, AO, QP and AT using a proportion.
- Using this proportion, express AT as a function of \(\theta\).
- What is the name of the line AT with respect to circle O?
- Relate the lengths PO, TO, QO, and AO using a proportion.
- Using this proportion, express TO as a function of \(\theta\).
- What is the name of the line TO with respect to circle O?