Evaluate the Following Expression $3 \sec ^ { 2 } y - 3 \cot ^ { 2 } \left( \frac { \pi } { 2 } - y \right)$

question 103

Multiple Choice

Evaluate the following expression.
$3 \sec ^ { 2 } y - 3 \cot ^ { 2 } \left( \frac { \pi } { 2 } - y \right)$