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

(d)

step-by-step explanation:

given: the line in the graph passes through points (5,30) and (6,26).

then, the equation of line is:

now, put y=a(n) and x=n,

hence, option d is correct.

1 1/5

step-by-step explanation: