Attempt any three questions from following questions each carry 4 mark.
Q.27) Show that magnitude of vector product of two vectors is numerically equal to the area of a
parallelogram formed by two vectors.
Perce Error
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1
Answer:
Formulaforareaofparallelogram
=base×height
=∣
a
∣.h
h=
∣
∣
∣
b
∣
∣
∣
sinθ
∴Area=∣
a
∣.
∣
∣
∣
b
∣
∣
∣
sinθ
Weknow
∣
∣
∣
a
×
b
∣
∣
∣
=∣
a
∣.
∣
∣
∣
b
∣
∣
∣
sinθ
Henceproved.
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