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 ( 76+ )
Otras preguntas
why are the rules for dividing integers similar to the rules for multiplying integers
1. Which of the following would be an illegal form of taxation based upon the Equal Protection Clause of the Fourteenth amendment? A. Taxing cigarettes B. Taxi
Why is Ellen Ochoa work at the space station important
Where did champlain set up a fur-trading post??
A line through which two points would be perpendicular to the line y=4/7x - 3
Identify the sentence that uses commas correctly. a. my friends say, "don't be so shy." b. my friends say, dont be, so shy. c. my friends say dont, be so shy
I have a water tank that holds 5 gallons of water I drink 4 pints of water a day how many full tanks of water I will be drinking 30 days
what is the combined weight of the 1/2 lb bags ?
english help? upvoting! Odor pollution is already a problem for those who live near Central City Dump. People tell me that they can't even stand to be outside f
Which sentence best supports the conclusion that the first dog is jealous? "Both he and the second dog looked upon each other sadly." "He decided that he wanted
