Select all the correct answers. If the measure of angle which statements are true? (3pi)/4 The measure of the reference angle is 45 degrees The measure of the reference angle is 30 degrees The measure of the reference angle is 60 degrees; sin(theta) = (sqrt(2))/2; cos(theta) = (sqrt(2))/2; tan(theta) = 1

Is there a direction u in which the rate of change of f(x,y)equals=x squared minus 3 xy plus 4 y squaredx2−3xy+4y2 at p(1,2) equals 14? give reasons for your answer. choose the correct answer below. a. no. the given rate of change is smaller than the minimum rate of change. b. no. the given rate of change is larger than the maximum rate of change. c. yes. the given rate of change is larger than the minimum rate of change and smaller than the maximum rate of change.