Question

2. If tan = 2, show that sec sin + tan²- cosec²
19/4​

Answer 1

GIVEN :

Tan = 2

To prove

sec sin + tan²- cosec²

19/4

$[ S = \{ z \in \mathbb{C}\, |\, |z| < 1 \} \quad \textrm{and} \quad S_2=\partial{S} \]$