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The three angles of a triangle are in the ratio 3 : 4 : 5. Then the angles respectively are :
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- 45°, 60°, 75°
- 60°, 45°, 75°
- 60°, 75°, 45°
- 75°, 60°, 45°
- 45°, 60°, 75°
Correct Option: A
According to question ,
In ∆ ABC,
As we know that, ∠A + ∠B + ∠C = 180°
Sum of ratio angles = 12
Given , A : B : C = 3 : 4 : 5
| ∴ ∠A = | × 180° = 45° | |
| 12 |
| ∠B = | × 180° = 60° | |
| 12 |
| ∠C = | × 180° = 75° | |
| 12 |
