Discover Questions

Vector A makes an angle of 20° and B makes an angle of 110° with the x axis. The magnitudes of A= 20 mag of b = 30. Find angle of resultant? Given that y=0 when x=1, solve the differential equation
xyδy/δx=y²+4,
obtaining an expression for y² in terms of x.? Plant trees on the polar caps of mars so that an ecosystem can start causing greenhouse effect trapping oxygen on the planet? Why does increase in temperature increase the total entropy in endothermic reactions ? If cos x = 3/7; x is an angle in the fourth quadrant; what is cos(x/2)?