Trigonometry is used in orthopedics tofind the deviation of a vertebra in degrees and know if the nervesare damaged . It is also used to mold prosthetic arms andlegs that measurements are tailored to allow operation close to theoriginal member . rigonometry is used in orthopedics tofind the deviation of a vertebra in degrees and know if the nervesare damaged . It is also used to mold prosthetic arms andlegs that measurements are tailored to allow operation close to theoriginal member .