Select all true statements. Group of answer choices

Trig functions will never be alone and will always has an angle measure associated with it.

Trig functions can be written alone as long as there is a ratio of two sides associated with it.

The only proper way to write: (trig function) is equal to the (ratio of two sides)

The only proper way to write: (trig function) of an (angle) is equal to the (ratio of two sides)

correctly written: cos x = 3/4

correctly written: sin = 3/4