1- csc (a)^(2)
You asked:
Evaluate the expression: \(1 - {\csc\left( a \right)}^{2}\)
MathBot Answer:
\[1 - {\csc\left( a \right)}^{2} = 1 - \csc^{2}{\left(a \right)}\]
Factored
\[1 - {\csc\left( a \right)}^{2} = - \left(\csc{\left(a \right)} - 1\right) \left(\csc{\left(a \right)} + 1\right)\]