# Thread: math problem

1. ## math problem

i need to solve this math problem as an homework but i cant find how to do it could you help me pls ?

2. ## Re: math problem

note that $\dfrac{2\sec^2{x}}{\tan^2{x}} = 2\csc^2{x}$ ...

next time post trig problems in the trig forum. thanks.

3. ## Re: math problem

ok so i would do 2csc2x - csc2x-1 = cot2x
csc2x-1=cot2x
1+cot2x-1=cot2x
cot2x=cot2x

thanks for the helping

4. ## Re: math problem

Originally Posted by tom1
ok so i would do 2csc^2(x) - csc^2(x)-1 = cot^2(x)
csc^2(x)-1=cot^2(x)
1+cot^2(x)-1=cot^2(x)
cot^2(x)=cot^2(x)
...