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 answer this correctly

PLEASE ANSWER THIS... IF A PLANT IS GROWN IN A WINDOW, SHELF AND CABINET. 1. WHAT IS THE TEMPERATURE OF WATER? 2. FOAM HEIGHT AFTER 10 MINS 3. INFERENCE PLEASE

can someone help me on this question please? Factorize x²-5x-6

What code do I have to use in my php if i don’t want my $_SESSION[“variablex”] to destroy? But i already have a session_destroy() above the code that needs to b

How to say cake in French? In French its gateau.

If you were to fair six sided dice what is the probability that the sun is four or higher

During which step (s) of aerobic respiration is oxygen used

An OP AMP has CMRR = 100 dB and open-loop gain =250000. Determine the common mode gain ACM

let P-6. 4) be a point on rectangle PQRS, What are the coordinates of P’ if the rectangle is dilated by a scale factor of 3/8?

What did the case of Sweatt vs. Painter accomplish? Allowed Herman Sweatt admittance into the School of Law at the University of Texas. Denied Herman Sweatt adm