show that magnitude of a cross product of tow vector is numerically equal to the are of parallelogram
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0
Answer:
Formulaforareaofparallelogram
=base×height
=∣
a
∣.h
h=
∣
∣
∣
b
∣
∣
∣
sinθ
∴Area=∣
a
∣.
∣
∣
∣
b
∣
∣
∣
sinθ
Weknow
∣
∣
∣
a
×
b
∣
∣
∣
=∣
a
∣.
∣
∣
∣
b
∣
∣
∣
sinθ
Henceproved.
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Answered by
0
Answer:
formula for area of parallelogram
=base×height
= |ā|.h
h= |ā|.|b| sin ø
|ā×b|=|ā|.|b| sin ø
hence proved.
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