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 ( 93+ )
Otras preguntas
Emily stopped at a produce stand to buy some tomatoes.Tomatoes cost $1.25 per pound at the stand. Emily bought 5 tomatoes that weighed 1.8 pounds in total.How m
voluntary deductions include ____. (1 point)
What is the term for different “jobs” that different cells perform in a multicellular organism? A. functions B. systems C. levels D. contractions
_________ are especially important because they are involved in a variety of processes, such as cell signaling, immune response, and enzyme activity.
Tim wants to rent a bike at the state park. It costs $3.95 per hour for the first 4 hours.After 4 hours, the cost is $2.50 per hour. How much would it cost Tim
In comparing an oak tree with a maple tree, you can correctly say that A. Both maple and oak trees lose their leaves in the fall. B. Unlike oak roots, maple ro
Mr.Harris has 54.8 acres of land. Mr.Fitz has 0.35 times as many acres as Mr.Harris has.How many acres of land does Mr.Fitz have?
what is the fraction 14/49 in simplest form question 2 what is the 3 fractions equivalent to 12/5
Given the equations 2x + 2y = 16 and 4x - 3y = -3, what are the values of x and y?
The memory card on melcher did it's camera can hold about 430 pictures. Melcher used 18% of the memory card while taking pictures at s family reunion about how
