∠ A + ∠ B = 9 0 0 ∠ B + ∠ C = 18 0 0 ∠ B + 12 7 0 = 18 0 0 ∠ B = 18 0 0 − 12 7 0 ∠ B = 5 3 0 ∠ A = 9 0 0 − 5 3 0 ∠ A = 3 7 0
Angle B measures 53 degrees and Angle A measures 37 degrees. These angles are derived from their relationships as complementary and supplementary angles with Angle C being 127 degrees. The calculations involve simple algebraic rearrangements of angle relationships.
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**Bahan:**- 250 gram cokelat masak pekat- 200 gram gula pasir- 100 gram tepung terigu- 1/2 sendok teh baking powder- 1/2 sendok teh vanili- 1/2 sendok teh garam- 2 butir telur- 100 gram mentega cair**Langkah-langkah:**1. **Siapkan bahan-bahan**2. **Panaskan oven** ke suhu 180°C3. **Lelehkan cokelat** dan mentega4. **Kocok gula dan telur** hingga putih5. **Masukkan tepung, baking powder, vanili, dan garam**. Aduk rata6. **Masukkan cokelat leleh**. Aduk rata7. **Tuang adonan ke loyang** yang sudah diolesi mentega8. **Panggang selama 25-30 menit**9. **Dinginkan** sebelum dipotong-potong10. **Sajikan**