Alexandra+Brinegar

CQ # 2&15 2. Using dimension analysis, you can add different units within a dimension by converting inches to feet, meters to centimeters, feet to meters, etc. You cannot add meters to seconds, however, because they are different dimensions. If the dimensions are not the same, the relation is incorrect. 16. The angle between a and b is a right angle.You can determine that the vectors make up a right triangle because you can use the pythagorean theorem to find the magnitudes of the angles. Then, you can substitute the vectors for the triangle legs.

P #19&47 19. 74.9 m. you use the law of cosines with 95m, 62m,and a 52 degree angle. 47. length of fourth leg= 6.88 km, degree of the angle is 26.9 degrees.