Answer
26 is matched with B.
$$\cos(-55^\circ)=\cos55^\circ$$
Work Step by Step
$$\cos(-55^\circ)$$
- Negative Angle Identities: $\cos(-\theta)=\cos\theta$
Therefore, $\cos(-55^\circ)=\cos55^\circ$
This corresponds to choice B. So we match 26 with B.
