For which of the following angles is cosecant undefined? 45° 60° 180° 270°

Cosecant is undefined at 180°.

Step-by-step explanation:

Since we have given that

Cosecant i.e. cosec Θ

Since we know from the "trigonometric table"

If  Θ = 45°

so, cosecant is defined.

If Θ = 60°,

So, cosecant is defined again.

If Θ = 180°

So, it is not defined.

If Θ = 270°

then

so, it is defined.

Hence, cosecant is undefined at 180°.

mathpapa

step-by-step explanation: