The images show cosine graphs and trigonometric equations with missing values to be filled in.

1. Cosine Graphs:

   • Both images display the graph of $y = \cos x$.
   • The second graph appears slightly different in amplitude and alignment compared to the first.
   • The graphs extend from $-360^\circ$ to $360^\circ$.

2. Trigonometric Equations:

   • The third image consists of sine and cosine equations with solutions to be completed.
   • The provided answers include angles such as $48^\circ, 132^\circ, 283^\circ, 32^\circ, 328^\circ, 331^\circ,$ and $-151^\circ$.
   • The missing values should be determined using trigonometric identities and reference angles.

Would you like a detailed step-by-step solution for filling in the missing values?

Related Questions:

1. How do you determine the reference angles for sine and cosine equations?
2. Why does the cosine graph appear different in both images?
3. What are the general solutions for $\sin x = k$ and $\cos x = k$?
4. How can you solve trigonometric equations using the unit circle?
5. How does the period of cosine affect the graph?

Tip:

When solving $\sin x = k$ or $\cos x = k$, always consider the reference angle and the quadrants where the function is positive or negative.