So the question goes like this

Solve the following trigonometric equation finding all solutions for X in the inerval [0, 2pi]

2cos(2x)csc^2(x)=2cos(2x)

Thanks in advance.

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- July 19th 2013, 09:11 PMTrimHondurasHey Guys Please Help me solve this problem.... :)
So the question goes like this

Solve the following trigonometric equation finding all solutions for X in the inerval [0, 2pi]

2cos(2x)csc^2(x)=2cos(2x)

Thanks in advance. - July 19th 2013, 10:04 PMSorobanRe: Hey Guys Please Help me solve this problem.... :)
Hello, TrimHonduras!

Quote:

We have: .

Factor: .

We have two equations to solve:

- July 20th 2013, 08:21 AMHallsofIvyRe: Hey Guys Please Help me solve this problem.... :)
Another way of looking at it: obviously if cos(x)= 0 then both sides are 0 so cos(x)= 0 gives solutions. If cos(x) is NOT 0, we can divide by 2cos(x) to get so that csc(x)= 1 and csc(x)= -1 gives solutions.