heplmeplz
heplmeplz
14-03-2017
Mathematics
contestada
cos(3x) = cos^2x - 3sin^2x cosx
Respuesta :
LammettHash
LammettHash
14-03-2017
[tex]\cos3x=\cos(2x+x)=\cos2x\cos x-\sin2x\sin x[/tex]
[tex]=(\cos^2x-\sin^2x)\cos x-2\sin^2x\cos x[/tex]
[tex]=\cos^3x-3\sin^2x\cos x[/tex]
Answer Link
VER TODAS LAS RESPUESTAS ( 31+ )
Otras preguntas
A safe weight loss plan recommends a weight loss of no more than __________ pounds per week
I don't rlly get this question can someone help me with the answer? Thanks
which best explains how contractionary policies can hamper economic growth
HELP PLEASE I WILL DO ANYTHING BRAINLIEST THANKS AND RATE! Amendments 14, 15, and 19 have resulted in a government that is more A.representative of the Americ
Which sentence has correct punctuation? Jovie owns a one-quarter share in Bluman-Neely's Department Store. Julio's frequent attempts to impress Michelle are n
Where would a leaf NOT be able to perform photosynthesis? a. In a dark cave b. In a cold climate c. In a hot climate d. On the moon e. In shallow water
Why did the women fight for the right to vote?
What crystal system is feldspar in?
Solve for the missing coordinate to equal the slope undefined (X,-5) and (-9,3)
During world war 2, Germany war an (blank) power and Italy was an (blank) power
