Solve for u cos(2u)^2-sin(2u)^2=cos(4u)

Solve Math

Trigonometry

$\cos^{2} (2 u) - \sin^{2} (2 u) = \cos (4 u)$

Move $\cos (4 u)$ to the left side of the equation by subtracting it from both sides.

$\cos^{2} (2 u) - \sin^{2} (2 u) - \cos (4 u) = 0$

Simplify the left side.

Tap for more steps...

Apply the cosine double-angle identity.

$\cos (2 (2 u)) - \cos (4 u) = 0$

Multiply $2$ by $2$ .

$\cos (4 u) - \cos (4 u) = 0$

Subtract $\cos (4 u)$ from $\cos (4 u)$ .

$0 = 0$

Since $0 = 0$ , the equation will always be true for any value of $u$ .

All real numbers

The result can be shown in multiple forms.

All real numbers

Interval Notation:

$(- \infty, \infty)$

Do you know how to Solve for u cos(2u)^2-sin(2u)^2=cos(4u)? If not, you can write to our math experts in our application. The best solution for your task you can find above on this page.

Graph 4/3*cos(pi/2-4x)+1

Solve for ? cos(theta)+1=0

Solve for x a=-8+(12-1)+5.25

Graph cos((2n+1)*90)

Find the Exact Value cos(-8.53)