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 ( 64+ )
Otras preguntas
Sally promotes her sunscreen product by claiming that with just one application, it will protect you from sun damage for 10 hours. This claim is not backed by a
the 14th hole at riverwoods golf course is 378 yards long how long would it be on a model with a scale of 0.5 inches to 75 yards
hno3 express your answer using four significant figures
HELP PLEASE!!!!!!!!!!
Help me find the surface area of this triangular prism.
What's the distance between - 14 and -5 on a number line? A) 34 B) 11.7 D) 68 Question 15 (5 points)
Write an exponential equation in the form y = abx whose graph passes through points (−3, 24) and (−2, 12). y = 3x y = 3(0.5)x y = 0.5(3)x y = −3(24)x
Find the 8 items in your home ... Please find the most uncommon items. Thanks JRequired1.Something you open2.Something red3.Something triangular4.Something smoo
Simplify the expression by combining like terms. 22+5−4+7−8
PLZ HELPPP ITS ONLY ONE ANSWER What is a possible effect of long-term environmental changes? A.adaptation B.migrationC. habitat loss D.starvation
