If bara and barb are unit vectors and th...

If `bara and barb` are unit vectors and `theta` is the angle between them, show that `frac(1)(2)[bara-barb] = sin frac(theta)(2)`

Topper's Solved these Questions

MODEL QUESTION PAPER 2
R G PUBLICATION|Exercise EXERCISE|40 Videos
MOTION IN A PLANE
R G PUBLICATION|Exercise EXERCISE|44 Videos

Similar Questions

Explore conceptually related problems

Determine the distances between the points : -frac(1)(2), -frac(1)(4)

If |barA + barB| = |barA - barB| then prove that the angle between A & B is 90^@ .

IF |bar AXbarB=barA.barB| what is the angle between barA and bar B ?

Find cos^2 theta - sin^2 theta . .

Evaluate: (frac(1)(2))^-5

lf 5 cos theta=7 sin theta , find the value of ( sin theta + cos theta)/(2 sin theta -3 cos theta) .

If tan theta+sin theta =m and tan theta-sin theta=n ,then show that m^2-n^2=4sqrt(mn) .

Solve sin 2theta+sin 4 theta+sin 6 theta=0 .

Solve: frac(x+1)(x-1) - frac(1)(2) = frac(1)(3)

R G PUBLICATION-MODEL QUESTION PAPER 3-EXERCISE

A body is projected such that its kinetic energy at the top of its tra...
Text Solution
|
Show that the trajectory of projectile is parabolic.
Text Solution
|
If bara and barb are unit vectors and theta is the angle between them,...
Text Solution
|
Find a unit vector which is perpendicular to both the vectors 2hati + ...
Text Solution
|
State the laws of static friction. What is limiting friction?
Text Solution
|
A body of mass 2kg is lying on a rough inclined plane of inclination ...
Text Solution
|
A body of mass 2kg is lying on a rough inclined plane of inclination ...
Text Solution
|
Define impulse. A machine gun of 10kg mass fires 25 gm bullets at the ...
Text Solution
|
Define 1 newton force. A balloon with mass 6 kg is descending down wit...
Text Solution
|
Calculate the angle of banking for a circlular track of radius R for v...
Text Solution
|
State and prove work-energy theorem.
Text Solution
|
A block of mass 4 kg irioving horizontally on a frictionless table at ...
Text Solution
|
The bob of a simple pendulum of length 1 m is' pulled aside from its e...
Text Solution
|
What is co-efficient of restitution? A woodenball is dropped from a he...
Text Solution
|
When is a collision said to be a perfectly inelastic? A mass is moving...
Text Solution
|
Two bodies of masses 10kg and 2 kg are moving with velocities 2hati-7h...
Text Solution
|
Deduce the relation tau=(dL)/(dt) relation the torque on a particle wi...
Text Solution
|
Find the torque due to a force (7hati-3hatj-5hatk)N about the origin a...
Text Solution
|
Define radius of gyration of a rigid body.What is the radius of gyrati...
Text Solution
|
A solid cylinder rolles down an inclined plane. Its mass is 2 kg and r...
Text Solution
|