Trigonometric Ratios
- Author:
- Godfrey Sovis
- Topic:
- Ratios
This is the Unit circle. Segment OP make an angle α with x-axis.
Move the point P along the circumference of the unit circle.
x-coordinate of P can be defined as Sinα and
y-coordinate of P can be defined as Cosα.
Observe how their values change when P is moved around the circle.