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 ( 94+ )
Otras preguntas
Explain how a drought might result in a famine.
Which compound has both ionic and covalent bonds? (1) CO2 (3) NaI (2) CH3OH (4) Na2CO3
Use 3.14 for .Jenna is planting four circular gardens. She is planting one garden each for tomatoes, carrots, cabbage, and strawberries. Each garden will have a
Which factor was the most important in affecting Paleolithic humans’ lives? health climate floods group size
What is an old Chinese belief concerned with tadpoles?
Which sample of matter is classified as a substance? (1) air (3) milk(2) ammonia (4) seawater
language used for descriptive effect and usually is not literally true is called
When you decrease the length of the effort arm on a lever which of the following happens to effort force? A. Force will decrease B. Force will increase C. Force
Which chart correctly describes the properties of electric and magnetic fields?
alex and Juana went on a 50 mile canoe trip with their class. on the first day they traveled 21 miles. what percent of the total distant was that
