Question #e5caf
1 Answer
May 1, 2017
Explanation:
#color(orange)"Reminder " sintheta=cos(pi/2-theta)#
#rArrsin(pi/10)=cos(pi/2-pi/10)=cos((2pi)/5)#
#color(orange)"Reminder " sintheta=cos(pi/2-theta)#
#rArrsin(pi/10)=cos(pi/2-pi/10)=cos((2pi)/5)#