#1**+1 **

We know that cos(A)=sin(90-A)

We also know that if sin(A)=sin(B) then B=A+360K or B=180-A+360K (think about it)

sin(x+37)=cos(2x+8)=sin(90-8-2x)=sin(82-2x)

**FIRST OPTION:**

x+37=82-2x+360K / add 2x, and subtract 37

3x=45+360K / divide by 3

x=15+120K

**SECOND OPTION:**

x+37=180-(82-2x)+360K=98+2x+360K / subtract (37+2x)

-x=61+360K / divide by -1

x=-360K-61

Ehrlich
Apr 10, 2017