Solve for all values between zero and 360 degrees.
cos(theta-42 degrees)=-1
What is the general solution and what is the solution????
cos(Ø - 42°) = -1
I know cos 180° = -1
Ø - 42 = 180
Ø = 222° , only one solution between 0° and 360°
(look at the graph of cos Ø )
The period of cos(Ø-42) is 360°
so a general solution is
Ø = 222° + 360k° , where k is an integer.