Question

Find the area of parallelogram if its two sides are forming by the vectors
A = 2î - 3ſ - k and B = i + 4ſ – 2k​

Answer 1

Answer:

Here a=3i+j−2k,b=i−3j+4k

Thus a×b=

∣

∣

∣

∣

∣

∣

∣

∣

i

3

1

j

1

−3

k

−2

4

∣

∣

∣

∣

∣

∣

∣

∣

=−2i−14j−10k=−2(i+7j+5k)

Hence area of parallelogram =

2

1

∣a×b∣=5

3

Answer 2

Answer:

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Explanation:

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