If the line `vec(OR)` makes angles ` theta_(1),theta_(2),theta_(3)` with the planes ` XOY, YOZ, ZOX` respectively , then ` cos^(2)theta_(1)+cos^(2)theta_(2)+cos^(2)theta_(3)` is equal to

If the line passing through origin makes angles theta_(1), theta_(2), theta_(3) with the planes XOY, YOZ and ZOX, then sin^(2)theta_(1)+sin^(2)theta_(2)+sin^(2)theta_(3)=

If a line makes angles theta_(1), theta_(2), theta_(3) with the coordinates planes, then sin^(2)theta_(1)+sin^(2)theta_(2)+sin^(2)theta_(3)= ………….

A line makes angle theta_(1),theta_(2),theta_(3) and theta_(4) with the diagonals of cube.Show that cos^(2)theta_(1)+cos^(2)theta_(2)+cos^(2)theta_(3)+cos^(2)theta_(4)=(4)/(3)

If theta "is theta " and (cos^(2)theta)/(cot^(2) theta -cos^(2) theta) =3 then theta is equal to

Let vec(a), vec(b), vec(c) are three unit vector such that vec(a)+vec(b)+vec(c) os also a unit vector. If pairwise angles between vec(a), vec(b), vec(c) are theta_(1), theta_(2) and theta_(3) respectively then cos theta_(1)+cos theta_(2)+ cos theta_(3) equals

Let vec(a), vec(b), vec(c) are three unit vector such that vec(a)+vec(b)+vec(c) os also a unit vector. If pairwise angles between vec(a), vec(b), vec(c) are theta_(1), theta_(2) and theta_(3) respectively then cos theta_(1)+cos theta_(2)+ cos theta_(3) equals

Let vec(a), vec(b), vec(c) are three unit vector such that vec(a)+vec(b)+vec(c) os also a unit vector. If pairwise angles between vec(a), vec(b), vec(c) are theta_(1), theta_(2) and theta_(3) respectively then cos theta_(1)+cos theta_(2)+ cos theta_(3) equals

Let z_(1),z_(2) and z_(3) be three points on |z|=1 . If theta_(1), theta_(2) and theta_(3) be the arguments of z_(1),z_(2),z_(3) respectively, then cos(theta_(1)-theta_(2))+cos(theta_(2)-theta_(3))+cos(theta_(3)-theta_(1))

Let z_(1),z_(2) and z_(3) be three points on |z|=1 . If theta_(1), theta_(2) and theta_(3) be the arguments of z_(1),z_(2),z_(3) respectively, then cos(theta_(1)-theta_(2))+cos(theta_(2)-theta_(3))+cos(theta_(3)-theta_(1))

If theta=pi/(2^n+1) then cos theta cos 2 theta cos 2^(2) theta...... Cos2^(n-1) theta is equal to