1.

Two vectors have a equal magnitude and their resultant also has the same magnetude. What is the angle between the vector

Answer»

EXPLANATION:

LET the MAGNITUDE of the VECTOR be A

A^2 = A^2+A^2+2AAcosΦ

1 = 2+2 cosΦ

cosΦ = -1/2

so Φ = 150°



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