Question

the value pi/2 is a solution to 4cos^2 (4x)-3=0
true or false?

Answer 1

ok... so solve it and you get

4cos^2(4x) = 3

divde by 4

\[\cos^2(4x) = \frac{3}{4}\]

next take the square roots

\[\cos(4x) = \pm \frac{\sqrt{3}}{2}\]

now you should be able o solve from here as you have an exact value.

when you get the 2 angles, divide them both by 4... to get x.

Answer 2

hope it helps

Answer 3

lol.... opps.... just substitute pi/2 into the equation. you don't need to solve it....

Answer 4

i already chose false on it as a wild guess to keep going. yikes.

Answer 5

so when substituting you get

\[4 \cos^2(4 \times \frac{\pi}{2}) - 3 = 0\]

which is

\[4\cos^2(2\pi) - 3 = 0\]

so find cos(2pi)

and work from there.

Answer 6

so I'd say false is the correct choice.

Answer 7

thank goodness. lol Well I am stuggling a little with another, can you help again lol?

Answer 8

The value pi/24 is a solution for the equation 4cos^2(4x)-3=0
True or False?

Answer 9

The value pi/12 is a solution for the equation 4cos^2(4x)-3=0
True or False?

Answer 10

The value 5π/24is a solution for the equation 4cos^2(4x)-3=0.
A. True
B.

Answer 11

The value 5π/24is a solution for the equation 4cos^2(4x)-3=0.

A. True B. Fals

Answer 12

The value PI/24 is a solution for the equation 4cos^2(4x)-3 = 0. True or False ....This time..if you don't know...don't talk.

Answer 13

The value PI/12 is a solution for the equation 4cos^2(4x)-3 = 0. True or False ....
Answer with explanation Please @ajprincess

Answer 14

Will Medal!Answer ASAP!!!!
Please Help!


X - 6 translates as "a number subtracted from 6.

Answer 15

4^2 - 4sin^2(x) = 4cos^2


true or false?

Answer 16

WILL FAN AND MEDAL

Use the squared identities to simplify
2cos^2x cos^2x

a- 3

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