Shakawaldgi
Shakawaldgi
02-09-2016
Mathematics
contestada
sec^2x+2sec=0. solve the equation for 0
Respuesta :
HomertheGenius
HomertheGenius
10-09-2016
u = sec x ( substitution )
u² + 2 u = 0
u ( u + 2 ) = 0
u = 0, or u = - 2
1/cos x = 0 1/cos x = - 2
(not accepted ) cos x = -1/2
x 1 = 2π/3, x 2 = 4π/3
Answer Link
VER TODAS LAS RESPUESTAS ( 12+ )
Otras preguntas
Review the excerpt from The Code Book. Cryptanalysts realize that their real goal is to find a way of cracking the RSA cipher, the cornerstone of modern encrypt
Compare “Photograph” with “Iron Maiden." What makes the Def Leppard song more pop oriented (and therefore possessing greater mass appeal)?
Write down the following sets using set-builder notation: A set A of all numbers greater than 3 A set B of all numbers less than 4 A set Y of all months of the
The ability for a muscle to work against a resistance for an extended period of time is.
Ruth considers aborting her unborn child because she is... Select one: a. tired of having kids. b. planning to leave Walter anyway. c. willing to give up her un
The area to the right of z=-0.78 under normal curve is
Without using the formula, work out the gradient of the graph shown. Give your answer in its simplest form?
Aisle 2 of a furniture store stocks 4-legged chairs, 4-legged tables, and 3-legged stools. If there are t tables, c chairs, and s stools, which expressions show
Another quick geometry question! Thanks!
Which best describes the function on the graph? O direct variation; k =1/4 O direct variation; k = 4 O inverse variation; k =1/4 O inverse variation; k = 4
