Solve each equation for 0 x 360 sqrt 2 cosx+1=0 please hurry

or in radians:

Step-by-step explanation:

From the way you wrote, you want to solve the equation

for , or in radians

Square both sides

In the Unit Circle, considering one revolution (interval ),

the values where  are in Quadrant II and III.

Once

The values where

  are 120º and 240º.

the correct answer is option c.   3

step-by-step explanation:

points to remember

equation of the line with coordinates (x₁, y₁) and (x₂, y₂) is given by,

slope m = (y₂ - y₁)/(x₂ - x₁)

from the figure we can see a line with two coordinates given

to find the slope of given line

here   (x₁, y₁)   = (-1, -1 ) and (x₂, y₂) = (1, 5)

slope m = (y₂ - y₁)/(x₂ - x₁)

  = (5 - -1)/(1 - -1)

  = (5 + 1)/(1 + 1)

  = 6/2 = 3

therefore the correct answer is option c.   3