Trigonometric EquationHard
Question
The projections of a vector on the three coordinate axis are 6, - 3, 2 respectively. The direction cosines of the vector are
Options
A.6, - 3, 2
B.
C.
D.
Solution
Projection of a vector on coordinate axis are x2 - x1, x2 - y1, z2 - z1
x2 - x1 = 6, y2 - y1 = - 3, z2 - z1 = 2
The D.C′s of the vector are
x2 - x1 = 6, y2 - y1 = - 3, z2 - z1 = 2
The D.C′s of the vector are
Create a free account to view solution
View Solution FreeMore Trigonometric Equation Questions
In ᐃABC, a = 4, b = 12 and B = 60o then the value of sinA is -...If the angle between the line and the plane x + 2y + 3z = 4 is cos-1 , then λ equals...A curve passes through (2, 0) and the slope of tangent at a point P(x, y) is equal to . Then equation of the curve is...A body falling from rest under gravity passes a certain point P. It was at a distance of 400 m from P, 4s prior to passi...A bead of weight w can slide on smooth circular wire in a vertical plane. The bead is attached by a light thread to the ...