Using determinants, find the area of \triangle {\PQR} with vertices {\P}(3,1), {\Q}(9,3) and {\R}(5,7). Also, find the equation of line {\PQ} using determinants.

CBSE Class 12 Math 2023 Delhi Set 2 Solved Paper - Question 11

Question : 11 of 14

Marks: +1, -0

Using determinants, find the area of

△ {\PQR}

with vertices

{\P}(3,1), {\Q}(9,3)

and

{\R}(5,7)

. Also, find the equation of line

{\PQ}

using determinants.

Solution:

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