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 ( 71+ )
Otras preguntas
solve the formula for the indicated variable (b=rw+r,for w sollution w=____)
A cone has a diameter of 8 cm. and a height of 4cm. If the height doubles then the volume is: a) four times largerb) three times as largec) Twice as larged) T
At the start of "The Necklace," why does Mathilde's husband go through "great trouble" to get an invitation to the ball?
Estimate the value of 21*3.86/0.207 anyone knw the estimate for this?
What is the HCF of 2 x y and 6 x y?
solve the formula for the indicated variable c=yt+y,for t (the solution is t=___)
Why is living important
How does a Retinal Scan Work?
if a baking tray is 700mm by 600mm, how many of 25cm in diameter can fit into the baking tray?
what are the 2 types of behavioral responses??
