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Explain solution RD Sharma class 12 chapter 5 Determinants exercise multiple choise question 36 maths
Answers (1)
Answer:
Correct option(b)
Hint:
Use determinant to solve the area of triangle.
Given:
Area of a triangle = 9sq.units
Vertices of triangle = (-3,0),(3,0) and (0,k)
We have to find the value of k.
Solution:
We have,
Area of a triangle = 9sq.units
Solving the determinant, we get
Hence k = 3 is required value of k.
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