Question

solve this problem ? friends

Answer 1

$it \: \: is \: \: not \: \: correct \: \: because \: \: { \sin }^{ - 1} \theta \\ means \: \: the \: \: value \: \: whose \: \: sine \: \: gives \: \theta. \\ \\ instead \: \: the \: \: following \: \: is \: \: correct \\ {( \sin\theta) }^{ - 1} = \frac{1}{\sin\theta} = cosec \: \theta \:$