Projection of Radius on x-Axis and y-Axis
- A B Cron
Imagine a spotlight is shining above, the radius it casts a shadow on the x-axis called the cosine. Now suppose the light casts a shadow of the radius on the y-axis called the sine. The tangent is the radius of the sine of θ divided by cosine of θ, there is no projection of this function.
These three definitions the sine (abbreviated sin), cosine (abbreviated cos), and tangent (abbreviated tan) of an angle (we designate our angle measure by the Greek letter theta, θ):