Question

Two vectors vevtorC=vector A+vectorB and vector D=vectorA-vectorB are perpendicular to each other then … (a)vectorA is parallel to vector
B. (b) vectorA is perpendicular to vectorB.
(c)vectorB is a null vector.
(d)vectorA and vectorB have equal magnitude.​

Answer 1

Answer:

Correct answer is b akka

Two vectors vevtorC=vector A+vectorB and vector D=vectorA-vectorB are perpendicular to each other then … (a)vectorA is parallel to vector

B. (b) vectorA is perpendicular to vectorB.

(c)vectorB is a null vector.

(d)vectorA and vectorB have equal magnitude.

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Answer 2

Answer:

option B-vectorA is perpendicular to vector B

Explanation:

The sum difference of two vectors A→ and B→ are (A→+B→) and (A→−B→). If thse are perpendiculat to each other . Then their dot product should be zero, i.e.,

(A→+B→).(A→−B→).(A→−B→)=0

or A→.A→−A→.B→+B→.A→−A→−B→.B→=0

or A^(2)- b^(2) =0 or A^(2) =B^(2) or A=+-B`.

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the arrow mark represents → = bar that means A bar the arrow need to be up but sorry try to understand