### Home > CALC > Chapter 7 > Lesson 7.4.4 > Problem 7-212

7-212.

What are the opposite and adjacent sides here?

To obtain θ', you will have to use implicit differentiation in terms of *t*, since the *x*-coordinate and θ are changing over time.

7-212.

What are the opposite and adjacent sides here?

To obtain θ', you will have to use implicit differentiation in terms of *t*, since the *x*-coordinate and θ are changing over time.