If `alpha,beta, gamma,delta` be four angles of a cyclic quadrilateral taken in clockwise direction then the value of `(2+sum cos alphacos beta)` will be:

If alpha, beta, gamma and delta be four angles of a cyclic qardrilateral, then the value of : cosalpha + cosbeta + cosgamma + cosdelta is :

If alpha, beta , gamma are angles of a triangle then the value of (sin^(2) alpha + sin ^(2) beta+sin ^(2) gamma-2 cos alpha cos beta cos gamma) is-

If the line makes angles alpha, beta, gamma, delta with four diagonals of a cube, then the value of cos^(2) alpha+cos^(2) beta+cos^(2) gamma+cos^(2) delta is equal to m/3 . Find m.

If a line makes angles alpha, beta, gamma, delta with the diafonals of a cubes then the value of 9(cos 2alpha + cos 2beta + cos2gamma + cos 2delta)^(2) equals ….......

If alpha,beta ,gamma are direction angles of a line , then cos 2alpha + cos 2beta + cos 2 gamma =

If a line makes angles alpha, beta, gamma, delta with the diafonals of a cubes then the value of 9(cos 2alpha + cos 2beta + cos2gamma + cos 2 delta )^(2) equals ….......

Let alpha,beta,gamma,delta be four real numbers such that alpha^(2)+gamma^(2)=9 and beta^(2)+delta^(2)=1 ,then the maximum value of 3(alpha beta-gamma delta)+4(alpha delta+beta gamma) is

Let alpha,beta and gamma are the angles of a right angle triangle,then the value of sin alpha*sin beta*sin(alpha-beta)+sin beta*sin gamma*sin(beta-gamma)+sin gamma*sin alpha*sin(gamma-beta)+sin(beta-gamma)*sin(gamma-gamma)*sin(gamma-

If alpha + beta = 90^0 , show that the maximum value of cos alpha.cos beta is 1/2 .