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Step 1 :

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The angle is $\"\"$ and the point is $\"\"$ .

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The rotation of x - axis :

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$\"\"$

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Substitute $\"\"$ in above equation. $\"\"$

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Substitute $\"\"$ in above equation.

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$\"\"$

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The rotation of y - axis :

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$\"\"$

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Substitute $\"\"$ in above equation.

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$\"\"$

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Substitute $\"\"$ in above equation.

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$\"\"$

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Step 2 :

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Multiply equation (1) with $\"\"$

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$\"\"$

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Add equations (1) and (3) :

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$\"\"$

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Step 3 :

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Substitute $\"\"$ in equation (1).

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$\"\"$

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$\"\"$ The xy co-ordinates are $\"\"$ .

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Solution : The xy co-ordinates are $\"\"$ .

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