Question

| How do we add and subtract the vectors?

Answer 1

Answer:

we add the vectors by triangle law of addition or parallelogram law

but for subtraction we write A-B as A + (-B)

and apply the triangle or parallelogram law

formula is (a^2 +b^2 +2abcostheeta )^1/2

for addition and theta is angle between vectors

formula is (a^2 +b^2 -2abcos theta)^1/2 for subtraction

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