Originally Posted by

**skg94** **i cant find any symbols on this site so if its confusing please do tell. **

sin[2(x-(pi/4))]=sq root2/2 for 0< x <2pi and for all feta (x=feta)

my attempt:

2(x-(pi/4))= pi/4 , 7pi/4

x-(pi/4) =pi/8 , 7pi/8

x = 3pi/8 9pi/8

based on the domain , only 3pi/8 fits.

for all feta = 3pi/8 +pi(n) , 9pi/8 + pi(n) where n is an element of the integers.

**4cos(x+30degrees)+5=7 for 0<x<360 and for all feta (x=feta)**

COS(X+30)=1/2

x+30 = 1.047197551

i dont know where to go from here

**2sin[2(x-(pi/6))]=-sqroot3 for 0<x<2pi and for all feta (x=feta) **

sin[2(x-(pi/6))] = -sqroot3/2

2(x-(pi/6))= pi/3 5pi/3

x-(pi/6) = pi/6 ,5pi/6

x= pi/3 and pi (both work)

for all: pi +pi(N) , pi/3 + pi(n) where n is an element of the integers.

3sin(x-1)=2 0<x<360 round to the tenth of a degree and for all feta (x=feta)

sin(x-1)=2/3

x-1=.7297276567

again im having problems with these decimal and degrees ones

and if you can check over the two i finished please and thank you , if i made mistakes please point them out even the obvious ones

i have a quiz tomorrow so if can someone PLEASE help me out thank you!