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prove that

Asked by 20th February 2009, 5:39 PM
Answered by Expert
Answer:

we know that a.b = |a| |b| cosθ

squaring both the sides

(a.b)2 = |a|2 |b|2 cos2θ

now cos2θ 1

==> (a.b)2 |a|2 |b|2

Answered by Expert 20th February 2009, 9:23 PM
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