The value of 90^ is : - Vidyadip

MCQ

The value of $\sec90^\circ$ is :

A
$1$
B
$\frac{\sqrt{2}}{3}$
C
$\sqrt{2}$
✓
$\text{None of these}$

✓

Answer

Correct option: D.

$\text{None of these}$

$\sec90^\circ=\frac{1}{\cos90^\circ}=\frac{1}{0},$ undefined.

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