InterviewSolution
Saved Bookmarks
| 1. |
In Δabc, ∠a + ∠b = 65°, ∠b + ∠c = 140°, Then Find ∠b. |
|
Answer» ∠A + ∠B = 65° ∴ ∠C = 180° - 65° = 115° ∠B + ∠C = 140° ∴ ∠B = 140° - 115° = 25° ∠A + ∠B = 65° ∴ ∠C = 180° - 65° = 115° ∠B + ∠C = 140° ∴ ∠B = 140° - 115° = 25° |
|