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This image appears to contain a set of mathematical problems in Indonesian. Here's a breakdown of the questions:

1. **Diketahui tan θ = 3/4, tentukan:**
   a. sin θ  
   b. cos θ  
   c. sec θ  
   d. csc θ  
   e. cot θ  

2. **Tentukan nilai dari:**
   a. sin 60°  
   b. cos 60°  
   c. tan 60°  
   d. sin 225°  

3. **Tentukan koordinat kartesian dan kutub:**
   a. (5, 5)  
   b. (5, 5)

4. **Carilah luas Δ ABC dari sisi a = 4 cm, b = 6 cm, c = 8 cm**

5. **Diketahui Δ ABC, sisi a = 30 cm, c = 50 cm, dan ∠CB = 60°; tentukan luas!**

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Diketahui tan θ = 3/4, tentukan:
   a. sin θ
   b. cos θ
   c. sec θ
   d. csc θ
   e. cot θ
2. Tentukan nilai dari:
   a. sin 60°
   b. cos 60°
   c. tan 60°
   d. sin 225°
3. Tentukan koordinat kartesian dan kutub:
   a. (5, 5)
   b. (5, 5)
4. Carilah luas Δ ABC dari sisi a = 4 cm, b = 6 cm, c = 8 cm
5. Diketahui Δ ABC, sisi a = 30 cm, c = 50 cm, dan ∠CB = 60°; tentukan luas!

Explore a set of mathematical problems involving trigonometric identities, coordinate geometry, and triangle areas. This includes calculating sin, cos, and other trigonometric functions based on given values, as well as solving for triangle areas using the Law of Cosines. Ideal for high school students in grades 8-11.

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