to the nearest whole degree, what angle measure has a cosine of 0.9123? ?

When only separate discreet points are graphed it is called?

Researchers were interested in whether relaxation training decreases the number of headaches a person experiences. they randomly assigned 20 participants to a control group or a relaxation training group and noted the change in number of headaches each group reported from the week before training to the week after training. which statistical analysis should be performed to answer the researchers' question?

Which statements regarding efg are true? check all that apply.