oyedejioyewolemaxwel oyedejioyewolemaxwel

11-07-2022
Mathematics

contestada

Prove that
cos^4∆ - sin^4∆ = 2cos^2∆ - 1

Respuesta :

Medunno13 Medunno13

11-07-2022

[tex]\cos^{4} x-\sin^{4} x\\\\=(\cos^{2} x+\sin^{2} x)(\cos^{2} x-\sin^{2} x)\\\\=\cos^{2} x-\sin^{2} x\\\\=\cos^{2} x-(1-\cos^{2} x)\\\\=2\cos^{2} x-1[/tex]

Answer Link

Otras preguntas

PLEASE HELP ME WITH READING COMPREHENSION. I WILL GIVE YOU 25 POINTS AND MARK YOU BRAINLIEST IF THEY ARE ALL RIGHT. 1. The discussion of vegetables in paragrap

in spoofing internet attack, the attackers computer assumes false internet address in order to gain access to a network (true or false

Which property of equality should be used with the equation c+5=78 to solve?

Project C: What is the total crash cost for crashing the following project by FOUR days? Activity Immediate Normal Time Crash Time Normal Cost Crash Cost CC in

to display only rows and columns that meet the specified condition or criteria computer

Allowing clients to view their pets during (. ) isn't considered standard of care.

Which of the following was made obsolete with the cell phone and wireless technology? I’m marking Brainliest land lines corded phones cable companies phone ope

Help immediately!!!!!!The following answers are: A. -7<= t<= -4 B. -3<=t<= 0 C. 4<=t<=8 D. -9<=t<=-5

Please help with both if you can! Thank you!

Which of the following is a strength in how men communicate? They are often direct. a. C. b. They enjoy a well-told story. They speak to large audiences. d. The