The sides of a triangle inscribed in a given circle subtends angles `alpha,beta,gamma` at the centre.Then, the minimum value of the arithmetic mean of `cos(alpha+pi/2), cos(beta+pi/2), cos(gamma+pi/2)` is

The side of a triangle inscribed in a given circle subtends angles alpha,beta and gamma at the centre. The minimum value of the arithmetic mean of cos(alpha+pi/2),cos(beta+pi/2) , and cos(gamma+pi/2) is equal to ____

The side of a triangle inscribed in a given circle subtends angles alpha,betaa n dgamma at the centre. The minimum value of the arithmetic mean of cos(alpha+pi/2),cos(beta+pi/2) , and cos(gamma+pi/2) is equal to ____

The side of a triangle inscribed in a given circle subtends angles alpha,betaa n dgamma at the centre. The minimum value of the arithmetic mean of cos(alpha+pi/2),cos(beta+pi/2) , and cos(gamma+pi/2) is equal to ____

The side of a triangle inscribed in a given circle subtends angles alpha,betaa n dgamma at the centre. The minimum value of the arithmetic mean of cos(alpha+pi/2),cos(beta+pi/2) , and cos(gamma+pi/2) is equal to ____

The sides of a triangle inscribed in a given circle subtend angles alpha, beta, gamma at the centre then minimum value of Arithmetic mean of cos(alpha+pi//2), cos beta+pi//2)cos (gamma+pi//2)

The sides of a triangle inscribed in a circle subtend anles alpha,beta,gamma at the centre.The minimum value of the arithmetic mean of cos(alpha+(pi)/(2)),cos(beta+(pi)/(2)),cos(gamma+(pi)/(2)) is equal to

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 ….......

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 ….......