2 cos^2 2A - 1
You asked:
Evaluate the expression: \(2 {\cos\left( 2 A \right)}^{2} - 1\)
MathBot Answer:
\[2 {\cos\left( 2 A \right)}^{2} - 1 = 2 \cos^{2}{\left(2 A \right)} - 1\]
2 cos^2 2A - 1
You asked:
MathBot Answer:
\[2 {\cos\left( 2 A \right)}^{2} - 1 = 2 \cos^{2}{\left(2 A \right)} - 1\]