What is the general solution for 0=-2cos(x) ?

The general solution for 0=-2cos(x) is x= pi/2+2pin,x=(3pi)/2+2pin

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0=-2cos(x)

0 = - 2 cos (x)

x = \frac{π}{2} + 2 πn, x = \frac{3 π}{2} + 2 πn

Solution steps

0 = - 2 cos (x)

Switch sides

- 2 cos (x) = 0

Divide both sides by

- 2

cos (x) = 0

General solutions for

cos (x) = 0

x = \frac{π}{2} + 2 πn, x = \frac{3 π}{2} + 2 πn

2 sec (θ) = 2

cos (2 x) = 2 - cos (2 x)

tan (x) = \frac{6.7}{4.9}

tan (2 a) = 2

5 cos^{2} (x) + 6 cos (x) = 8

What is the general solution for 0=-2cos(x) ?
The general solution for 0=-2cos(x) is x= pi/2+2pin,x=(3pi)/2+2pin