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 ( 16+ )
Otras preguntas
List the next four multiples of the fraction 3/5
Reasons why Kush is considered a satellite of Egypt are: Their pyramids and tombs are similar. Their sailing vessels looked much the same. They had similar reli
Each child in the Smith family was given an orange cut into 8 equal sections. Each child ate 5/8 of the orange. After combining the leftover sections, Mrs. Smit
Humanistic therapists regard ________ as the single most positive influence in facilitating human growth.
Isotopes of an element have the same number of protons but a different number of d.neutrons.
What were some of the motives behind germany's sending of the document to mexico? [1]one motive of germany sending this document was to make an alliance with me
Games are $25 each, and Caleb has $125 to spend. How many games can Caleb buy if he uses all his money? Question 3 options: 2 3 4 5
Consider a value to be significantly low if its z score less than or equal to minus−2 or consider a value to be significantly high if its z score is greater tha
Mia works two part-time jobs for a total of 25 hours per week. She wrote and solved the following equations to determine how many hours she worked at each job d
How to find the angle
