Cosecant of Three Right Angles less Angle

Theorem

 * $\csc \left({\dfrac {3 \pi} 2 - \theta}\right) = -\sec \theta$

where $\csc$ and $\sec$ are cosecant and secant respectively.

Also see

 * Sine of Three Right Angles less Angle
 * Cosine of Three Right Angles less Angle
 * Tangent of Three Right Angles less Angle
 * Cotangent of Three Right Angles less Angle
 * Secant of Three Right Angles less Angle