Question

sin(x+5pi/12)+sin(x+pi/12)=2sin(pi/3)

Answer 1

sin+sinb=2*(sin(a+b)2)*cos((a-b)2)
sina=1 a=pi2+2*pi*n

p.s. С тебя печенька =)

Answer 2

SIN+SINB=2(SIN(A+B)/2*COS(A-B)/2
SINa-1