-
Incentre of ∆ ABC is I. ∠ABC = 90° and ∠ACB = 70°. ∠AIC is
-
- 115°
- 100°
- 110°
- 105°
- None of these
- 115°
Correct Option: E
As per the given in question , we draw a figure triangle ABC whose I is incentre ,
The point of intersection of internal bisectors of the angles of a triangle is incentre.
Given that , ∠ABC = 90° and ∠ACB = 70°
As we know that , ∠BAC + ∠ABC + ∠ACB = 180°
∠BAC = 180° – 90° – 70° = 20°
∴ ∠AIC = 180 - | - | ||
2 | 2 |
∠AIC = 180° –10° – 35° = 135°