The resultant of two vectors of magnitudes (P+Q) and (P-Q) is sqrt(P^(2) + Q^(2)). THn the angle between the vectors is

The resultant of two vectors of magnitudes (P+Q) and (P-Q) is sqrt(P^(

1.	The resultant of two vectors of magnitudes (P+Q) and (P-Q) is sqrt(P^(2) + Q^(2)). THn the angle between the vectors is
Answer» `cos^(-1) [(-(P^(2) + Q^(2)))/(2(P^(2) - Q^(2)))]` `cos^(-1) [((P^(2) + Q^(2)))/(2(P^(2) - Q^(2)))]` `cos^(-1) [(-P^(2) - Q^(2))/(P^(2) Q^(2))]` `cos^(-1) [(P^(2) - Q^(2))/(P^(2) + Q^(2))]` Answer :A