The image shows a series of geometry problems related to triangles. Let's break down each problem:

1. Question 4: Find the value of $\theta$ in a right triangle, with side lengths 3 and 9. This seems like a right triangle with a missing angle.

2. Question 5: Find the value of $x$ in a triangle with angles 85° and 50°, and the expression $22x + 1$. This looks like an algebraic equation involving the angles and sides.

3. Question 6: Find the length of side $c$ in a triangle, with side 21 miles and angles 66° and 91°. This will likely involve the Law of Sines or Cosines.

4. Question 7: Find the value of $\theta$ in a triangle with sides 12 and an unknown angle $\theta$.

5. Question 8: Find the value of $x$ in a right triangle, where one angle is 61° and the hypotenuse is 11.

Would you like me to solve all of these problems in detail, or is there a specific one you want to focus on first? Let me know!

Related Questions:

1. How do you apply the Law of Sines or Cosines to triangles?
2. What is the Pythagorean theorem and how is it used in right triangles?
3. How do you find unknown angles in a triangle using angle sum properties?
4. What are the steps for solving a triangle with an algebraic expression for side lengths?
5. How can you use trigonometric ratios (sine, cosine, and tangent) to solve for unknown sides and angles?

Tip: For solving triangles, the Law of Sines and Cosines are powerful tools to use when dealing with non-right triangles.