poeticsoul poeticsoul

10-10-2017
Mathematics

contestada

Find an identity for cos(4t) in terms of cos(t)cos⁡(t).

Respuesta :

LammettHash LammettHash

10-10-2017

[tex]\cos4t=2\cos^22t-1=2(2\cos^2t-1)^2-1[/tex]
[tex]\cos4t=8\cos^4t-8\cos^2t+1[/tex]

Answer Link

Otras preguntas

Mark each statement if it accurately describes Greek architecture. A. Architects showcased Spartan deeds. B. The sculptor Phidias created a giant

pliz answer this question

Which answer best completes the sentence? Actually, I've never heard a __________ poem. a. worse b. worst c. worser d. more worse

When a 480 Hz. tuning fork and a piano key are struck together, four beats are heard. When a 470 Hz. tuning fork and the same piano key are struck, six beats ar

According to the _____ law of thermodynamics, energy is never 100% efficient because _____.

Explain how inconsolable grief is the theme of Annabel Lee. Explain the speaker's inability to work through his grief over his lost.

Which Virginian refused to sign the U.S. Constitution, but was the chief supporter of the Bill of Rights? a. James Madison b. George Mason c. Thomas Jefferson d

The Constitution established three branches of government that

You __________ well at the contest last year. Choose the form of the verb that BEST completes the sentence. A) sang B) sung <------? C) sing Eliminate D) s

What is the purpose of a coordinate plane? How does the Z axis relate to the x and y axis. (Yes this is project lead the way)