If `DeltaABC` is right angled at A,then `r_(2)+r_(3)`=

Options

A. `r_(1)-r`
B. `r_(1)+r`
C. `r-r_(1)`
D. R

Explanation

To solve the problem, we need to find the value of \( r_2 + r_3 \) for a triangle \( \Delta ABC \) that is right-angled at \( A \).

### Step-by-Step Solution:

1. **Identify the Angles**:
Since triangle \( ABC \) is right-angled at \( A \), we have:
\[
\angle A = 90^\circ, \quad \angle B + \angle C = 90^\circ
...