To convert radians to degrees, multiply the number of radians by (180/$${\mathtt{\pi}}$$)
(2$${\mathtt{\pi}}$$/5) radians times (180/$${\mathtt{\pi}}$$)= 360$${\mathtt{\pi}}$$/5$${\mathtt{\pi}}$$.
Cancel out the 5$${\mathtt{\pi}}$$, and you get 72 degrees as the answer.
To convert radians to degrees, multiply the number of radians by (180/$${\mathtt{\pi}}$$)
(2$${\mathtt{\pi}}$$/5) radians times (180/$${\mathtt{\pi}}$$)= 360$${\mathtt{\pi}}$$/5$${\mathtt{\pi}}$$.
Cancel out the 5$${\mathtt{\pi}}$$, and you get 72 degrees as the answer.