martsariayuindeli
martsariayuindeli
19-11-2016
Mathematics
contestada
SOLVE.. 2 cos 3x - 1 = 0
Respuesta :
Аноним
Аноним
19-11-2016
2cos 3x-1=0
2cos 3x=1
cos 3x=1/2
3x=cos⁻¹ 1/2 (cos⁻¹ (1/2)= π/3 + 2Kπ) and cos⁻¹(1/2)=5π/3+2kπ
1)
3x=π/3+2kπ
x=π/9+2/3(kπ) K∈Z; K=...-2,-1,0,1,2...
2)
3x=5π/3+2kπ
x=5π/9+(2/3)kπ
Answer:
x=π/9+2/3(kπ) U 5π/9+(2/3)kπ ; K∈Z
Answer Link
VER TODAS LAS RESPUESTAS ( 44+ )
Otras preguntas
A right triangle has its vertices at (3, 4), (-3, 7), and (5, 4). What is the area of the triangle? Use the formula A = 1/2bh where b is the base of the triangl
Please help! Taking a test online right now. The value in dollars, y, of a laptop computer x months after it was purchased can be modeled by the function y = 55
how does the description of the government's intervention in the Great Depression contribute to the development of ideas in the text
Read the poem. Any Human to Another by Countee Cullen The ills I sorrow at Not me alone Like an arrow, Pierce to the marrow, Through the fat And past the bone.
A painter charges $15.54 per hour, plus an additional amount for the supplies. If he made $142.43 on a job where he worked 4 hours, how much did the supplies co
Help please! (20 points!)What do I do here??
Which layer of earth behaves more like a solid near the top, and more like a liquid near the bottom, where pressure is higher?.
Which kind of exercise is often used as therapy to rebuild muscle strength after an injury? isoanaerobic isokinetic isometric
At the beginning of this section, the author says that a 1925 survey conducted in Muncie, Indiana, found that 21 out of 25 families who owned cars did not have
The U.S. Constitution - 2:Question 5 Who has the power to formally declare war, according to the Constitution? Select one: O Congress o Council of Governors Sup
