analearLurk
analearLurk
24-11-2016
Mathematics
contestada
Solve sin2x + 4sin x + 3 = 0
Respuesta :
HomertheGenius
HomertheGenius
25-11-2016
sin² x + 4 sin x + 3 = 0
Substitution: u = sin x
u² + 4 u + 3 = 0
u² + 3 u + u + 3 = 0
u ( u + 3 ) + ( u + 3 ) = 0
( u + 3 ) ( u + 1 ) = 0
u = - 3, u = - 1;
sin x = - 3 ( false )
sin x = - 1
Answer:
x = 3 π / 2 + 2 k π
, k ∈ Z
Answer Link
VER TODAS LAS RESPUESTAS ( 95+ )
Otras preguntas
When electromagnetic radiation is arranged to wavelength and frequency, it forms the A. electromagnetic spectrum. B. multiple-spectrum vividness. C. ecliptic pl
what are the factor pairs of 73
the African savanna, more wildebeests are born than the environment can support. Which is most likely to happen over a period of years as a result? b)The chance
How is the process of fertilization in animals like the process that takes place in plants? A. A sperm cell and an egg cell combine to form an embryo. B. Sperm
the two main types of fermentation are called what
When you add 18 to 1/4 of a number, you get the number itself.
Tanisha and Rachel had lunch at the mall tanisha ordered three slices of pizza and two colas Rachel ordered two slices of pizza and 3 colas Tanisha bill was si
You may have learned about the sheep clone Dolly in your science class. Although this experiment was greeted as a great success, there are many problems with cl
Earth’s continents are constantly in motion because they sit on top of gigantic plates which float on Earth’s mantle. Energy from the Earth’s core creates conve
Determine the solution to the system of equations by using substitution. Y=4x+10 Y=-5x-10
