Question

Please send the answer with explanation.
l will mark as the brainliest.​

Answer 1

Answer:

we can say that BA is perpendicular to T ,

hence the ans is = 90

Answer 2

Answer:

Step-by-step explanation:

Given that

A and B  are two vector

A+B and A-B are perpendicular to each other.

We know that if two vectors(M and N) are perpendicular to each other then

M . N = |M|. |N| cos θ

Perpendicular θ =90°

  so cos 90° = 0

M . N = |M|. |N| cos θ = |M|. |N| x 0

M . N = 0

So we can say that

( A+B  ).(A-B ) = 0

A.A+B.A- A.B - B.B = 0            ( A.B=B.A)

A.A - B.B=0                          

So we can say that

|A| = |B|

So ratio of their magnitude is 90°.

Hope it helps

:)