||'''Book'''|| Linear Algebra ||
 ||'''Author'''|| Gilbert Strang ||
 ||'''Edition'''||  ||

/* code_begins */

{{{
var('theta')
var('alpha')
s=matrix([[cos2theta,sin2theta],[sin2theta,-cos2theta]])
t=matrix([[cos2alpha,sin2alpha],[sin2alpha,-cos2alpha]])
a=s*t
a.rotation angle()
}}}

/* code_ends */

 * '''Solution by''': 
   * <g.mamatha>, <student>, <prakasam engg college>
   * <g.haritha>, <student>, <prakasam engg college>
   * <vvl amrutha valli>, <student>, <prakasam engg college>