1.Find the angle between the two planes 2x+y−2z=52x + y - 2z = 52x+y−2z=5 and 3x−6y−2z=73x - 6y - 2z = 73x−6y−2z=7a.cos−1(4/21)\cos^{-1}(4/21)cos−1(4/21)b.cos−1(2/21)\cos^{-1}(2/21)cos−1(2/21)c.cos−1(1/21)\cos^{-1}(1/21)cos−1(1/21)d.cos−1(5/21)\cos^{-1}(5/21)cos−1(5/21)Login to continueOnly logged in users canattempt or see the solution.
