Physics - Vectors Question with Solution | TestHub

PhysicsVectorsMultiplication of vectorsMedium2 minQB

PhysicsMediuminteger

Points $A (0, 0), B (4, 2)$ and $C (2, 4)$ form a triangle ABC . All the co-ordinates are given in cm. Find area of triangle in $cm^{2}$ .

Answer:

Solution:

$a = A B = 4 \hat{i} + 2 \hat{j},$

$b = A C = 2 \hat{i} + 4 \hat{j}$

$A = \frac{1}{2} a \times b = \frac{1}{2} \hat{k} (16 - 4) = 6 \hat{k}$

Area = 6 $cm^{2}$ . Answer: 6

Subject:PhysicsTopic:VectorsSubtopic:Multiplication of vectors

⏱ 2mℹ️ Source: QB

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