What is the resultant vectors , when two vectors are at right angles t

1.	What is the resultant vectors , when two vectors are at right angles to each other ?
Answer» `R = sqrt(P^(2) Q^(2))` `R = P +Q` R = P - Q `R = sqrt((P)/(Q))` SOLUTION :`R = sqrt(P^(2) +Q^(2) +2PQ COS 90^(@))` ` = sqrt(P^(2) +Q^(2))`

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