A Two vectors A and B are such that(A) = 4, (B)= 6, and (A-B)= 5. Find (A + B). (ya kon ha??)
Answers
Answered by
0
Answer:
|A-B|=5
A^2 + B^2 - 2A.B=25
16 + 36 -2A.B=25
27=2A.B
|A+B|=√(A^2+B^2+2A.B)=√(16+36+27)
=√79
Explanation:
Answered by
0
Answer:
√79
Explanation:
|A-B|=5
A^2 + B^2 - 2A.B=25
16 + 36 -2A.B=25
27=2A.B
|A+B|=√(A^2+B^2+2A.B)=√(16+36+27)
=√79
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