Suggesting for Ncalc+ to add inverse function

Components

This is a powerful opensource android calculator that contains almost of the features needed. But this simple calculator lags a simple inverse functions of sin,cos,tan

Proposal

My proposal is add the inverse functions of sin,cos,tan where user can perform the inverse function in this same calculator itself

Mockups / Examples

when user holds the sin the sin-1 function will be enabled where same goes to other two

Benefits

Inverse of sin,cos,tan can be perform