Final answer:
The terminal side of a π radian angle in standard position lies along the negative x-axis.
Explanation:
In standard position, the terminal side of a π radian angle would be the same as a half-circle, which corresponds to 180° or π rad. This means the terminal side of a π radian angle in standard position lies along the negative x-axis.
When a ray is at an angle of π rad in standard position, it is represented horizontally to the left on the Cartesian plane, starting from the origin and extending to the left.
Radians are commonly used for measuring rotation angles and are crucial in trigonometry and calculus.
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