What are the characteristics (a, b, c and `alpha, beta, gamma`) values in a tetragonal systems)

if a=b ne c and alpha=beta=gamma=90^(@) , the crystal system is

The crystal system for which a!= b!= c and alpha = beta = gamma = 90^(@) is said to be

The circumcentre of a triangle having vertices A(a,atan alpha),B(b,btan beta),C(c,ctan gamma) is at origin, where alpha+beta+gamma =pi . Then the orthocentre lies on

(a) What is the composition of alpha , beta and gamma radiations? (b) Can a hydrogen (""_(1)^(1) H) nucleus emit an alpha particle ? ( c) Which one alpha , beta or gamma radiation has the least penetrating power ?

Let alpha, beta, gamma be the measures of angle such that sin alpha+sin beta+sin gamma ge 2 . Then the possible value of cos alpha + cos beta+cos gamma is

If alpha,beta,gamma are the roots of a x^3+b x^2+cx+d=0 and |[alpha,beta,gamma],[beta,gamma,alpha],[gamma,alpha,beta]|=0, alpha!=beta!=gamma then find the equation whose roots are alpha+beta-gamma,beta+gamma-alpha , and gamma+alpha-beta .

Determine the values of alpha ,beta , gamma when [{:( 0, 2beta, gamma),( alpha ,beta, -gamma),( alpha ,-beta, gamma):}] is orthogonal.

The equations of the line through the point (alpha, beta, gamma) and equally inclined to the axes are (A) x-alpha=y-beta=z-gamma (B) (x-1)/alpha=(y-1)/beta=(z-1)/gamma (C) x/alpha=y/beta=z/gamma (D) none of these

If alpha + beta + gamma = π/2 and cot alpha, cot beta, cot gamma are in Ap. Then cot alpha. Cot gamma

Let alpha, beta and gamma are the roots of the equation 2x^(2)+9x^(2)-27x-54=0 . If alpha, beta, gamma are in geometric progression, then the value of |alpha|+|beta|+|gamma|=