Understanding the Signs of Trigonometric Functions in Quadrants

This lesson covers the signs of trigonometric functions in different quadrants of the coordinate plane. It explains how the signs of x and y coordinates affect the signs of sine, cosine, and tangent, as well as their reciprocals. The lesson also introduces a simple trig chart to help remember which functions are positive in each quadrant. Additionally, it clarifies how to interpret statements about the positivity or negativity of trig functions, using quadrant II as an example.

What does it mean when we say the sine of theta is greater than zero and the cosine of theta is less than zero?

Describe the relationship between the sine and cosine functions in terms of their signs in different quadrants.