Related Questions

If $$\frac{{{\text{cos }}\alpha }}{{{\text{cos }}\beta }} = a$$   and $$\frac{{{\text{sin }}\alpha }}{{{\text{sin }}\beta }} = b{\text{,}}$$   then the value of $${\sin ^2}\beta $$  in terms of a and b is?
$$\frac{{{\text{cos }}\alpha }}{{{\text{sin }}\beta }} = n$$   and $$\frac{{{\text{cos }}\alpha }}{{{\text{cos }}\beta }} = m,$$   then the value of $${\text{co}}{{\text{s}}^2}\beta $$   is?
Assertion (A) Amongst alpha, beta and gamma rays, α-particle has maximum penetrating power.
Reason (R) The alpha particle is heavier than beta and gamma rays.
Which value is assigned to alpha and beta in the alpha-beta pruning?