Question

If A+B=C, then magnitude of B is

Answer 1

Answer:

answer is ✓C.B-A.B

Explanation:

A+B+C the magnitude of B is ✓C.B-A.B

Answer 2

Answer:

The magnitude of B is √C.B-A.B.

Explanation:

→A+→B=→C

Taking dot product with →B we get,

→A.→B.+→B.→B=→C.→B

→A.→B.+→B²=→C.→B

→B²=→C.→B-→A.→B

∴→B=√→C.→B-→A.→B

∴B=√C.B-A.B.

Therefore, the magnitude of B is √C.B-A.B.