angles (1 Viewer)

[crammy90]

when im doing sine rule and do
sinx = (12sin20/19) to get 0.21...
is it because it is less than 0 we do shift sine?
i dont undersatnd when we have to use shift sine and when not to

 

[lolman12567]

you only use shift sine when you want to get the angle.

so it would be x=sin^-1(12sin20/19)

 

[bored of sc]

when im doing sine rule and do
sinx = (12sin20/19) to get 0.21...
is it because it is less than 0 we do shift sine?
i dont undersatnd when we have to use shift sine and when not to

You use sin^-1 when you are solving for x and you have sinx. To move the sin to the other side of the equation and find x you multiply each side of the equation by sin^-1 or shift sin.