Question

The value of $\mathrm{cosec}90°$ is

Answer 1

Determine the value of $\mathrm{cosec}{90}^{\mathrm{o}}$.

$$\begin{gathered} \mathrm{cosec}{90}^{\mathrm{o}}=\frac{1}{\sin {90}^{\mathrm{o}}}\left[\because \mathrm{cosec}\mathrm{\theta }=\frac{1}{\sin \mathrm{\theta }}\right] \\ =1 \end{gathered}$$

Therefore, the value of $\mathrm{cosec}{90}^{\mathrm{o}}$ is $1$.