Idon't have a clue
solve for x, 0° ≤ x ≤ 360°. write degree measurements in ascending order.

cos 2 x+cos²x=1 x =

First of all, we can use the double angle identity to write

The equation becomes

Divide both sides by 3 to get

And finally consider the square root of both terms (don't forget the double sign):

So, the solutions are

If you want x in [0,360], consider the equivalent angle

the multiples of 15 are 15, 30,45, 60, 75, 90, 105, 120, 135, 150, 165, 180, 195,   210, 225, 240, 255, 270, 285, 300, 315, 330, 345, 360, 375,   390, 405, 420, 435, 450, 465, 480, 495, 510, 525, 540, 555, 570, 585, 600, 615, 630, 645, 660, 675, 690, 705, 720, and 735.

the factors of 15 are 1, 3, 5, and 15.

hope that , fam!

-une, your fren : )

step-by-step explanation:

for the free