## Functions Modeling Change: A Preparation for Calculus, 5th Edition

$$\frac{3\tan \left(φ+1\right)}{4}$$
Simplifying the expression using trigonometric identities, we find: $$\frac{3\sin \left(φ+1\right)}{4\cos \left(φ+1\right)} \\ \frac{3\tan \left(φ+1\right)}{4}$$