Step-by-Step Solution
Key Concept: Compare trigonometric function values at x = 1 radian where tan reaches its maximum relative value.
<p>At x = 1 radian (≈ 57.3°), we compare the trigonometric values. Since 1 radian is in the first quadrant and tan function increases rapidly, tan 1 ≈ 1.557 is the greatest among sin 1 ≈ 0.841, cos 1 ≈ 0.540, and cot 1 ≈ 0.642.</p>
Correct Answer: C