State whether the following are true or false. Justify your answer.

cot A is not defined for A = 0°.

Dear Student

The answer is True.

Since cot function is the reciprocal of the tan function,
it is also written as:

cot A = cos A/sin A
Now substitute A = 0°

cot 0° = cos 0°/sin 0°
= 1/0
= undefined.
Hence, it is true

Thanks