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Considering two vectors $\to A =^i + 2^j$ and $\to B = 2^i +^j$ . Choose the correct statement(s).

दो सदिश $\to A =^i + 2^j$ तथा $\to B = 2^i +^j$ पर विचार करते हुए, सही कथन/कथनों का चयन कीजिए।

Angle between

(\to A + \to B)

and

(\to A - \to B)

is 90°

(\to A + \to B)

व

(\to A - \to B)

के मध्य कोण 90° है S

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(\to A + \to B) \cdot \to A = 9

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∣ ∣ ∣ (\to A - \to B) \times \to A ∣ ∣ ∣ = (\to A + \to B) \cdot \to A

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(\to A \cdot \to B) = 2

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Solution

The correct option is B $(\to A + \to B) \cdot \to A = 9$
Solution

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