Question

if a.b = a*b then what is the resultant of a and b

Answer 1

$|a | | b| \div \sqrt{2} ...................$

Answer 2

abcostheta = absintheta
So theta = 45 degree
R2 = A2 + B2 + 2AB COSTHETA
R2 = A2 + B2 + ROOT2 AB
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