The value of c which makes the angle 45° between \(\vec a = \hat i + – McqOptions

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1.	The value of c which makes the angle 45° between \(\vec a = \hat i + c\hat j\) and \(\vec b = \hat i + \hat j\) is
A.	1
B.	\(\frac{1}{{\sqrt 2 }}\)
C.	\( - \frac{1}{{\sqrt 2 }}\)
D.	0
Answer» E.

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