Drwa the diagram first and then solve the LHS first.
there will be 3 different triangles and take 2 at a time and since they will be congruent by SAS condition(side angle side) replace the a by the R by solving it further.....try it !!!!!!!!!!1
Drwa the diagram first and then solve the LHS first.
there will be 3 different triangles and take 2 at a time and since they will be congruent by SAS condition(side angle side) replace the a by the R by solving it further.....try it !!!!!!!!!!1