Brainllest help meh

There are several unique characteristics of qualitative research that make it distinct from quantitative research. describe the aspects of qualitative research and the elements of design that contribute to the rigor of the work. what actions of the researcher can compromise the integrity of the findings?

Do, h = (7, 9) (14, 18) the scale factor is

If the value of cos330°is√3/2 then find cos 165°.