Simplify using properties of exponents. Do not use other identities to simplify if possible. 

 sin14(x)cos16(x)sin2(x)cos10(x)=\displaystyle {{\sin}^{{14}}{\left({x}\right)}}\cdot{{\cos}^{{16}}{\left({x}\right)}}\cdot{{\sin}^{{2}}{\left({x}\right)}}\cdot{{\cos}^{{10}}{\left({x}\right)}}=