The direction cosines of the ray from `(0,0,0) to (2,-3,6)` are (A) `-2/7,3/7,-6/7` (B) `2/7,37,6/7` (C) `-2/7,-3/7,6/7` (D) `2/7,-3/7,6/`

The direction cosines of a normal to the plane 2x-3y-6z+14=0 are (A) (2/7,(-3)/7,(-6)/7) (B) ((-2)/7,3/7,6/7) (C) ((-2)/7,(-3)/3,(-6)/7) (D) none of these

The projections of a vector on the three coordinate axis are 6,3,2 respectively.The direction cosines of the vector are (A)6,-3,2(B)(6)/(5),(-3)/(5),(2)/(5)(C)(6)/(7),(6)/(7),(2)/(7) (D) (-6)/(7),(-3)/(7),(2)/(7)

If projections of as line on x,y and z axes are 6,2 and 3 respectively, then directions cosines of the lines are (A) (6/2,2/7,3/7) (B) (3/5,5/7,6/7) (C) (1/7,2/7,3/7) (D) none of these

The three roots of the equation |[x,3,7],[2,x,2],[7,6,x]|= are

The projection of the join of the points (3,4,2)(5,1,8) on the line whose d.c's are ((2)/(7),(-3)/(7),(6)/(7)) is

Which is the correct ascending order of the given numbers ? A. (3)/(7), 0.3, (2)/(7) B. 0.3, (2)/(7), (3)/(7) C. (2)/(7), 0.3, (3)/(7) D. (2)/(7), (3)/(7), 0.3

Subtract : 7 3/7-6 2/5

What is the value of ( 3^0 +4^0 +5^0 ) ? (a) 7 (6) 7 (c) 3 (d)