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 ( 32+ )
Otras preguntas
"Alice hit her head on the car door and stopped to rub the injured area. Based on the gate theory of pain transmission, by rubbing her head, Alice activated th
Nicole teacher asked her to make a diagram of a food chain Nicole me the diagram shown to the right what do the arrows in the diagram represent
A population of values has a normal distribution with μ=204.9μ=204.9 and σ=81.9σ=81.9. You intend to draw a random sample of size n=222n=222. What is the mean o
A citizen of York purchased a truck in 20X3 for $50,000. On June 10, 20X9, she donated the truck to York. The fair value of the truck on the date of donation wa
A baby carriage is sitting at the top of a hill that is 21 m high The carriage with the baby weighs 12 N
Before World War 1, most Indians
Which of the following was not a result of imperialism? -Spanish American War -Annex of Hawaii -Purchasing Alaska -Child Labor Laws
How is a plateau different from a fault-block mountain?
Determine whether the function is growth or decay AND its percentage of growth or decay. y=4(9)^x
A massive drought and heat wave caused the dust bowl in texas, however, the damage was compounded by the lack of prairie grass. Explain why prairie grass was i
