I have opened the image, and from what I can read, it seems to include two trigonometric equations. Here's a breakdown:

The first equation appears to be: $\sin 18.5^\circ \cdot \cos 48^\circ = 3 - 2.9$ The second equation seems to be: $\sin 0.55^\circ = \text{something} \, \cos \theta$

I'll now solve the first equation step by step.

Step 1: Simplify the right-hand side.

We start with: $3 - 2.9 = 0.1$ So, the equation becomes: $\sin 18.5^\circ \cdot \cos 48^\circ = 0.1$

Step 2: Compute the trigonometric values.

We need to find $\sin 18.5^\circ$ and $\cos 48^\circ$.

Let me calculate that.The left-hand side of the equation, $\sin 18.5^\circ \cdot \cos 48^\circ$, evaluates to approximately 0.2123.

Thus, the equation becomes: $0.2123 = 0.1$ This shows that the left-hand side is larger than the right-hand side, meaning there might be an issue with the original setup or the problem needs further refinement.

Do you have any clarifications or want further details about this solution? Feel free to ask.

Here are five related questions for further practice:

1. How do you solve trigonometric identities involving sine and cosine?
2. Can you solve $\sin(x) \cdot \cos(y) = k$ for different values of $k$?
3. How can you find approximate values for trigonometric functions using a calculator?
4. What are the laws of sines and cosines in triangles?
5. How do angles in different quadrants affect the sine and cosine values?

Tip: Always make sure the units of your angles (degrees or radians) match the problem you're solving to avoid errors.