Convert $-210^{\circ}$ to radian measure in terms of $\pi$.
radians

Answer

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Answer

$\boxed{-3.6651914291880923}$ or approximately $\boxed{-\frac{7\pi}{6}}$ is the radian measure of -210 degrees.

Steps

Step 1 ：Given the angle in degrees is -210.

Step 2 ：We use the formula to convert degrees to radians: radians = degrees * (π / 180).

Step 3 ：Substitute -210 into the formula: radians = -210 * (π / 180).

Step 4 ：Simplify the expression to get the radian measure: radians = -3.6651914291880923.

Step 5 ：$\boxed{-3.6651914291880923}$ or approximately $\boxed{-\frac{7\pi}{6}}$ is the radian measure of -210 degrees.