solve 2sec2x-cot2x=tan2x i found it hard to solve this. plz help ..thx

I know that

cos2x = cost^2x - sin^2x

=1-2sin^2x

=2cos^x

tan2x = 2tanx/1-tan^2x

but not sure(Thinking)

Printable View

- May 29th 2011, 06:41 AMmike789solve 2sec2x-cot2x=tan2x
solve 2sec2x-cot2x=tan2x i found it hard to solve this. plz help ..thx

I know that

cos2x = cost^2x - sin^2x

=1-2sin^2x

=2cos^x

tan2x = 2tanx/1-tan^2x

but not sure(Thinking) - May 29th 2011, 07:06 AMProve It

Go from here. - May 29th 2011, 07:33 AMSoroban
Hello, mike789!

Quote:

Solve: .

. .

. .

And we have two equations to solve.

. .

. .

. .

. .