Evaluate and Simplify the Quantity$$\langle \cos ( t ) , \sin ( t ) , 3 \rangle \cdot \langle \cos ( t ) , \sin ( t ) , t \rangle$$

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Evaluate and Simplify the Quantity $\langle \cos ( t ) , \sin ( t ) , 3 \rangle \cdot \langle \cos ( t ) , \sin ( t ) , t \rangle$