The random variable ξ obeys the uniform law with the density function on a line segment (−π/2, π/2):                              To find a distributive law of η = cos ξ. A random variable ξ obeys the...

The random variable ξ obeys the uniform law with the density function on a line segment (−π/2, π/2):

To find a distributive law of η = cos ξ.

A random variable ξ obeys the normal law

and a random variable η has the uniform density function.