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State whether the following are true or false. Justify your answer. cot A is not defined for A = 0°.

State whether the following are true or false. Justify your answer. 
 
 
 cot A is not defined for A = 0°.

Grade:12

1 Answers

Harshit Singh
askIITians Faculty 5963 Points
8 months ago
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

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