QN 15..please answer

A rotation matrix R for rotation around an arbitrary vector by some angle can be expressed as the product of three rotations (Euler's angles): rotation around X axis by angle , followed by the rotation around Y axis by angle and followed by the rotation around Z axis by angle . All the rotations are counter clockwise. Show that: R=coscossincossincossinsinsincossinsinsin+coscoscossincossincos+sinsinsinsincoscossincoscos