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

if a worker is paid $8.16 per hour and works 8.5 hours in one week how much is she or he paid for that week

An art museum had 275,760 visitors last year. The museum was open every day of the year except for 5 holidays. Hoe many visitors did the museum have each day, o

What is the surface are of a storage b

A rubber ball contains 5.70*10⁻¹ dm³ of gas at a pressure of 1.05 atm. What volume will the gas occupy at 7.47 atm?

where do most of the people in Australia live

You are not allowed to park within how feet of a railroad crossing.

The hydrosphere is the sphere containing all of the earth's water in all of its forms, including _____, _____, and _____.

186 is what percent of 600

The price of paper increases by a lot. Book producers respond by supplying _____ books.

U.S. president Franklin d. Roosevelt proposed a massive package of Depression relief called the Great Society. a. True b. False