Find all solutions to the equation. cos x = -one divided by two

x = 2πn - π/3

x = 2πn + π/3

Step-by-step explanation:

Given that a trigonometric equation

cos x =

We know that,

cos x = -

Now take the inverse of cos both the side

x = -π/3

We know that, the cycle of cos is 2π

So, we add 2πn where n is any integer.

x = 2πn - π/3

x = 2πn + π/3

That's the final answer,

I hope it will help you.

the answer is d

the answer is in the first quadrant, which make the y-int positive.

since the dots are going down, therefore the correlation is negative

i hope it is right.

dc=6 square root of 3 and ac is 12 square root 3

c and d

step-by-step explanation:

square root of 3/2 = 18/c

cross multiply to get 18*2=√3*c

36/√3 * √3/√3 = c

c= 36*√3/3

c=12√3