F(x) = 4 [cos (x)]^2 - 3 = 0

4[cos(x)]^2 = 3

cos(x) = √3 / 2

That happens in the first and fourth quadrants, for the angles 30 degrees and 330 degrees.

Answer: x = 30 degrees and x = 330 degrees

5 0

3 years ago

Read 2 more answers

Given f (x) =2x-3 what is f(-15) A. -16 B. -13 C. 7 D. 30

Murljashka [212]

Letter d is the answer.

5 0

2 years ago

Solve for x t=1/2(1/x-1/y)

Ilya [14]

Answer:

Step-by-step explanation:

671518 jnaja(a iuyquq uhh 71718(2961881

8 0

2 years ago

I need help plz!

Irina18 [472]

Answer:

circumference= $\pi$ D

19.5=3.14*D

19.5 =6

3.14

D=6

Radius=3

area= $\pi$ r²

3.14*3*3=28.26

area=28 inches

Step-by-step explanation:

8 0

2 years ago