Why doesn’t it work?

Question

Answer 1

Favourite answer

Sine has the value of -1 to +1

12/7 is 1.7

Answer 2

Sine of any angle can't be greater than 1 or smaller than -1

A = sin^-1 (12/7)

 is trying to find an angle such that

sin A = 12/7

that is not possible because 12/7 >1