A girl walks 4 km towards west, then she walks 3 km in a direction 30oeast of north and stops. Determine the girls displacement from her initial point of departure.
Connecting you to a tutor in 60 seconds.
Get answers to your doubts.
The axes of coordinates are rotated about the z-axis though an angle of π/4
in the anticlockwise direction and the components of a vector are 22,
Prove that the components of the same vector in the original system are -1,5,4.
The sides of a parallelogram are 2i^+4j^−5k^
. The unit vector parallel to one of the diagonals is
a. 71(3i^+6j^−2k^) b. 71(3i^−6j^−2k^)
c. 691(i^+6j^+8k^) d. 691(−i^−2j^+8k^)
The vectors 2i+3j^,5i^+6j^
have initial points at (1, 1). Find the value of λ
so that the vectors terminate on one straight line.
In a triangle ABC,DandE
are points on BCandAC,
respectivley, such that BD=2DCandAE=3EC˙
be the point of intersection of ADandBE˙
using the vector method.
be triangle, the position vecrtors of whose vertices are respectively i^+2j^+4k^
. Then DeltaABC
a. isosceles b. equilateral
c. right angled d. none of these
If the vectors A,B,C
of a triangle ABC
respectively then find ∠ABC˙
Find ∣a∣and∣∣b∣∣,if(a+b)a−b˙=8 , ∣a∣=8∣∣b∣∣˙
Statement 1: If cosα,cosβ,andcosγ are the direction cosines of any line segment, then cos2α+cos2β+cos2γ=1.
Statement 2: If cosα,cosβ,andcosγ are the direction cosines of any line segment, then cos2α+cos2β+cos2γ=1.