Which of the following is not an identity? O A. sinx(cotx + tan x) = secx
O B. csc2x + sec2x = 1
O C. cos2x cscx-cscx = -sinx
D. cos2x - sin2x = 1- 2sin2x

In each of the cases that follow, the magnitude of a vector is given along with the counterclockwise angle it makes with the +x axis. use trigonometry to find the x and y components of the vector. also, sketch each vector approximately to scale to see if your calculated answers seem reasonable. (a) 50.0 n at 60.0°, (b) 75 m/ s at 5π/ 6 rad, (c) 254 lb at 325°, (d) 69 km at 1.1π rad.

When solving this problem: 3025/5.5 = a/90.75 you get 49912.5 which would be the length of one of the sides of a square when the area is only 90.75 inches. is that answer correct, why, and how is it possible?

Xy x xy if a and b are positive integers such that a*b=9 and b*a=72 what is the value of a/b