1.Angle between the planes x+y+2z=6x + y + 2z = 6x+y+2z=6 and 2x−y+z=92x - y + z = 92x−y+z=9 isa.π/4\pi/4π/4b.π/6\pi/6π/6c.π/3\pi/3π/3d.π/2\pi/2π/2Login to continueOnly logged in users canattempt or see the solution.