1.(06.01 MC)
Use the distance formula to determine what type of triangle ADEF is if it has coordinates D(2, 1), E(3,5), and F(6,2).
(just write the number you get under the square root symbols in the blanks below, in order) (5 points per blank)
a.) What is the length of DE? ?
b.) Whaths the length of EF?
whaths
?
c.) What is the length of DF? ?
d.) Based on your answers above for the lengths of the sides, what type of triangle is ADEF? x2=5 y2=1
x2=13 y2=1
x2=13 y2=1
2. (06.02 MC)
hower the following questions. Be sure to answer all 3 questions, in order. (4 points per question)

I've been working on this for a few days and i just don't understand, it's due in a few hours. you. the direction of a vector is defined as the angle of the vector in relation to a horizontal line. as a standard, this angle is measured counterclockwise from the positive x-axis. the direction or angle of v in the diagram is α. part a: how can you use trigonometric ratios to calculate the direction α of a general vector v = < x, y> similar to the diagram? part b suppose that vector v lies in quadrant ii, quadrant iii, or quadrant iv. how can you use trigonometric ratios to calculate the direction (i.e., angle) of the vector in each of these quadrants with respect to the positive x-axis? the angle between the vector and the positive x-axis will be greater than 90 degrees in each case. part c now try a numerical problem. what is the direction of the vector w = < -1, 6 > ?