व्यंजक `|bara xx barb|^(2) + (bara.barb)^(2)` का मान ........ है |

bara.(barb+barc)xx(bara+barb+barc)=

prove that: (baraxxbarb) ^ 2 = | bara | ^ 2 | barb | ^ 2 - (bara.barb) ^ 2 = | (bara.bara, bara.barb), (bara.barb, barb.barb) |

bara, barb, barc are three unit vectors, barb is not parallel to barc and baraxx (barb xx barc) = 1/2barb then (bara, barb) = .... , (bara, barc) =

If theta is the angle between any two vectors bara and barb and | bara xx barb | = | bara.barb | , then value of theta is

If abs(bara)=4,abs(barb)=2 and the angle between bara and barb is (pi)/6 , then abs(bara xx barb)^(2) is equal to

Let bara and barb be vectors,satisfying |bara|=|barb|=5 and (bara,barb)=45^(@) . Find the area of the triangle having bara-2barb and 3bara+2barb as two of its sides.

The vectors bara,barb and bara+barb are

The vectors bara,barb and bara+barb are