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  • Provide solution for RD Sharma Maths Class 12 Chapter 24 Vector or Cross Product exercise Very Short Answer Question, question 19.

Provide solution for RD Sharma Maths Class 12 Chapter 24 Vector or Cross Product exercise Very Short Answer Question, question 19.

Answers (1)

ANSWER:

\frac{\pi}{2}

HINT:

Use formula of  cross product.

GIVEN:

\vec{a} \times \vec{b} is a unit vector

SOLUTION:

Use formula \vec{a} \times \vec{b}

\begin{aligned} \vec{a} \times \vec{b} &=|\vec{a}||\vec{b}| \sin \theta \\ 1 &=(1)(1) \sin \theta(\because|\vec{a}| \&|\vec{b}| \text { are unit vector.) }\\ & \because \sin \theta=1 \\ & \therefore \theta=\frac{\pi}{2} \end{aligned}

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