6. (10 pts) recall the cosine formula: if a triangle has side lengths a, b and c, and the angle between the sides of length a and b is e, then c^2 = a^2 +b^2+2ab cose. (a) restate the cosine formula as a statement about vectors v and w with angle 8 between them. (b) use what you know about dot products to prove the above formulation of the cosine formula

Question 1 of 10 2 points different groups of 50 graduates of an engineering school were asked the starting annual salary for their first engineering job after graduation, and the sampling variability was low. if the average salary of one of the groups was $65,000, which of these is least likely to be the average salary of another of the groups? o a. $64,000 o b. $65,000 o c. $67,000 o d. $54,000