MCQ
Which of the following is not defined?
- A$\sec 0^{\circ}$
- B$\operatorname{cosec} 90^{\circ}$
- ✓$\tan 90^{\circ}$
- D$\cot 90^{\circ}$
✓
Answer
Correct option: C.
$\tan 90^{\circ}$
(c)
$\tan 90^{\circ}=\frac{\sin 90^{\circ}}{\cos 90^{\circ}}=\frac{1}{0}=$ not defined
$\tan 90^{\circ}=\frac{\sin 90^{\circ}}{\cos 90^{\circ}}=\frac{1}{0}=$ not defined
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