In ΔABC, ∠A = 68°. If I is the incentre of the triangle, then the measure of ∠BIC is:
Show answer & explanation
Correct answer: A
Explanation
The correct answer is Option 1 i.e. 124°.
Given:
In ΔABC,
∠A = 68°
We know that
As we know incentre is the meet point of all the angle bisectors
Incentre of a triangle = 90° + ∠A/2
Now, according to the question
On substituting the values in the formula
⇒ ∠BIC = 90° + 68°/2
⇒ ∠BIC = 124°