Which of the following functions is undefined when x = 0?
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⭐⭐⭐Answer⭐⭐⭐
✤ We know that the value of sin 0 is always 0.
✤ csc x or cosec x is 1/sinx
✤Now, if we have zero in the denominator, 1/sin 0 = 1/0 will be an undeterminant form and hence, undefined.
✤So, f(x) = csc x will be the correct answer.
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