sydneybailey6699 sydneybailey6699
  • 03-10-2018
  • Mathematics
contestada

How do I factor trig functions?
I am stuck on how to factor out equations like 1+sinX-cos2x=0
I am confused on where to go from here to solve the equation. Pls help.

Respuesta :

MollieToliver MollieToliver
  • 03-10-2018

Use cos2x =1-2sin^2x

1+sinx- (1-2sin^2x) = 1+ sinx -1+2sin^2x

=sinx+2sin^2x=sinx(1+2sinx)

Therefore

Either sinx=0 or 1+ sin2x =0

X=npi or sin2x=-1

Sin2x=sin 3pi/2

2x= npi +(-1)^n3pi/2

x=npi/2 + (-1)^n 3pi/4

Answer Link

Otras preguntas

Find all powers of 4 in range 4 through 1,000
How do scientists use seismic waves to determine the interior structure of Earth?
Write a system of equations with a solution (4,–3)
5x+4y+100 in slope intercept form
If Walt can paint 25 feet of fence in an hour, and Joe can paint 35 feet in an hour, how many minutes will it take them to paint a 150-foot fence, if they work
Determine whether the sequence coverage or diverges. If it converges, give the limit. 48, 8, 4/3, 2/9, ...
An airplane travels 3,260 kilometers in 4 hours. What is the airplane’s average speed?
Which of the following statements is true concerning LUCA? (1) LUCA was a cell. (2) All life on Earth evolved from LUCA. (3) LUCA probably existed probably arou
The height of a rectangular prism with a 20 cm by 12 cm base and a 30 cm diagonal.find the unknown dimension
If a slope of a line is 2/0 is it 0 or undefined?