Question
The reflection of the point $(\alpha ,\beta ,\gamma )$ in the XY-plane is
- (a) $(\alpha ,\beta ,0)$
- (b) $(0,0,\gamma )$
- (c) $( - \alpha , - \beta ,\gamma )$
- (d) $(\alpha ,\beta , - \gamma )$ ✓ Correct
The reflection of the point $(\alpha ,\beta ,\gamma )$ in the XY-plane is
In XY-plane, the reflection of the point $(\alpha ,\beta ,\gamma )$ is $(\alpha ,\beta , - \gamma )$.
NCERT & Exemplar solution for CBSE Class 12 Mathematics, Three Dimensional Geometry. Curated by Sachin Sharma. Free for all students.