It looks like you've uploaded an image containing a worksheet on trigonometry and Pythagoras’ theorem. I'll help you work through some of these problems.

Here’s a general breakdown of what the worksheet seems to cover:

1. Right Triangles and Special Angles: Some questions require using trigonometric ratios (e.g., sine, cosine, tangent) or special angle properties (like 45°-45°-90° and 30°-60°-90° triangles).
2. Pythagorean Theorem Problems: Some questions involve using the Pythagorean theorem to find missing side lengths in right triangles.

Would you like me to walk you through a specific problem from this sheet, or should I choose a few examples and explain them?

Let me know if you want detailed explanations on any of these!