Evaluate the dot product A⃗ ⋅B⃗ if A⃗ =9i^+2j^ and B⃗ =9i^−9j^
Evaluate the dot product A⃗ ⋅B⃗ if A⃗ =9i^−9j^ and B⃗ =9i^+2j^.
here,
A = 9i + 2 j
B = 9 i - 9 j
the dot product , A.B = ( 9 i + 2 j) .(9i - 9 j)
A.B = (81 - 18) units = 63 units
and when
A = 9i - 9 j
B = 9 i + 2 j
the dot product , A.B = ( 9 i - 9 j) .(9i + 2 j)
A.B = (81 - 18) units = 63 units
Evaluate the dot product A⃗ ⋅B⃗ if A⃗ =9i^+2j^ and B⃗ =9i^−9j^ Evaluate the dot product...
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