Question

Find all solutions to the equation 1 = 2cos Θ.

Answer 1

cos(theta) = 1/2
so theta = pi/3 + 2kpi (k=0,1,2....)
and theta = -pi/3 + 2kpi (k=0,1,2...)

Answer 2

I still don't get what I'm suppose to do

Answer 3

@alekos

Answer 4

Find theta

Answer 5

u need to find theta..
cos(theta) = 1/2 =>
theta = 60deg
and the general solutions are
2npi +or- theta =>
1solution is 60
2nd = 2*1*180 + 60 =420deg
3rd = 2*2*180 + 60 = 780deg and so on
similarly,
for -
2*1*180 - 60 = 300deg
2*2*180 - 60 = 720 and so on....

n =0,1,2,3...

Answer 6

@mashlyashela