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Zef Hemel · Answer 1 · 2017-11-28T16:34:11+0000

cotangent is the inverse of tangent function. Hence, in this case, the equation is converted to tan 3x = -1/ squareroot 3 / 3 = -squareroot 3using a calculator in the radians mode, 3x is equal to -pi/3. This means x should be equal to -pi/18.

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