$\"\"$

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Consider two vectors $\"\"$ and $\"\"$ .

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The magnitudes of $\"\"$ and $\"\"$ are same.

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$\"\"$ .

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Show that $\"\"$ and $\"\"$ are orthogonal.

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If $\"\"$ and $\"\"$ are orthogonal, then $\"\"$ .

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Find $\"\"$ .

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$\"\"$

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$\"\"$ .

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Find $\"\"$ .

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$\"\"$

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$\"\"$ .

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Find $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$ .

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$\"\"$ .

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Therefore, $\"\"$ and $\"\"$ are orthogonal.

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$\"\"$

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Observe the diagram:

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The legs of the angle can be made to correspond to vectors $\"\"$ and $\"\"$ .

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$\"\"$

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$\"\"$ and $\"\"$ are orthogonal.

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The legs of the angle can be made to correspond to vectors $\"\"$ and $\"\"$ .