If P - Q - P Q- then the angle between P and Q isA- 0-B- 30-C- 45-D- 60-

The correct option is A 0^ocosθ = P . QPQ ∴ cosθ = 1 ∴ θ = 0^o ...

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Multiplication with Vectors

If P · Q = P ...

Question

If $\to P . \to Q = P Q,$ then the angle between $\to P$ and $\to Q$ is

0^{o}

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30^{o}

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45^{o}

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60^{o}

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Solution

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Similar questions

P

Q

P

P

Q

Q

∣ ∣ ∣ \to a \cdot \to b ∣ ∣ ∣ = ∣ ∣ ∣ \to a \times \to b ∣ ∣ ∣,

\to a

\to b

(a) 30^{\circ} (b) 45^{\circ}

(c) 60^{\circ} (d) 90^{\circ}

\cos P = \frac{1}{7} and \cos Q = \frac{13}{14}

c o s P = \frac{1}{7}

c o s Q = \frac{13}{14},

60^{\circ}

120^{\circ}

60^{\circ}

30^{\circ}

20^{\circ}

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