$\"\"$

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The point in rectangular coordinate system is $\"\"$ .

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To convert rectangular coordinate system to spherical coordinate system, use the conversion equations $\"\"$ , $\"\"$ and $\"\"$ .

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Substitute $\"\"$ in the above conversion equations.

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$\"\"$

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$\"\"$

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Consider $\"\"$ .

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$\"\"$

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Properties of Inverse trigonometric functions: $\"\"$ .

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$\"\"$

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$\"\"$

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Consider $\"\"$ .

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$\"\"$

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Properties of Inverse trigonometric functions: $\"\"$ .

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$\"\"$

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The point in spherical coordinate system is $\"\"$ .

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$\"\"$

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The point in spherical coordinate system is $\"\"$ .