Question

Give an example of tangents in the real world that have not been presented in this lesson.
Explain how you know the tangent and the radius in your example are perpendicular.

This is in relation to tangent lines and not cosine, sine, etc!

Answer 1

lines a and b are tangents on the circle O

r radius of circle O

Answer 2

- the radius of a circle is always perpendicular on tangent line of a circle in the intersection point of tangent line with circle

Answer 3

i dont even kno