Let `veca , vecb , vecc` be three unit vectors such that ` |veca + vecb +vecc| =1 and veca bot vecb , " if " vecc` makes angles ` delta beta " with " veca, vecb` respectively, then ` cos delta + cos beta ` is equal to

Let veca,vecb and vecc are three vectors such that |veca|=3, |vecb|=3, |vecc|=2, |veca+vecb+vecc|=4 and veca is perpendicular to vecb,vecc makes angle theta and phi with veca and vecb respectively, then cos theta+cos theta=

Let veca,vecb and vecc are three vectors such that |veca|=3, |vecb|=3, |vecc|=2, |veca+vecb+vecc|=4 and veca is perpendicular to vecb,vecc makes angle theta and phi with veca and vecb respectively, then cos theta+cos theta=

Let veca ,vecb , vecc be three unit vectors such that angle between veca and vecb is alpha , vecb and vecc " is " beta and vecc and veca " is " gamma. " if " | veca. + vecb + vecc| =2 , then cos alpha + cos beta + cos beta =

Let veca , vecb , vecc be unit vectors such that veca .vecb =0=veca.vecc . If the angle between vecb and vecc " is " pi/6 , " then " veca equals

Let veca ,vecb , vecc be three unit vectors such that angle between veca and vecb is alpha , vecb and vecc " is " beta and vecc and veca " is " gamma. " if " | veca. + vecb + vecc| =2 , then cos alpha + cos beta + cos gamma =

If veca, vecb, vecc are unit vectors such that veca+vecb+vecc=0 , find the value of veca cdot vecb + vecb cdot vecc + vecc cdot veca

Let veca, vecb and vecc be unit vectors such that veca.vecb=0 = veca.vecc . It the angle between vecb and vecc is pi/6 then find veca .

let veca, vecb and vecc be three unit vectors such that veca xx (vecb xx vecc) =sqrt(3)/2 (vecb + vecc) . If vecb is not parallel to vecc , then the angle between veca and vecb is:

let veca, vecb and vecc be three unit vectors such that veca xx (vecb xx vecc) =sqrt(3)/2 (vecb + vecc) . If vecb is not parallel to vecc , then the angle between veca and vecb is: