# Math Help - trigonometric equation 2)

1. ## trigonometric equation 2)

1-\frac{cos^2x}{1+cosx}=sinx

2. ## Re: trigonometric equation 2)

Originally Posted by deathmate
1-\frac{cos^2x}{1+cosx}=sinx
What are you trying to do? Solve this equation? Or show it's an identity?

3. ## Re: trigonometric equation 2)

Originally Posted by Prove It
What are you trying to do? Solve this equation? Or show it's an identity?
uppsss, sorry , i need to make equal ,left hand like right hand ,my apologies!

4. ## Re: trigonometric equation 2)

Originally Posted by deathmate
uppsss, sorry , i need to make equal ,left hand like right hand ,my apologies!
And what makes you think that they are equal? Are you sure that you copied the question correctly?

5. ## Re: trigonometric equation 2)

hi PI

i think he wants the number x for which the above equation is true.he wants to solve it.

6. ## Re: trigonometric equation 2)

i need to prove that the left side is equal to the right!

7. ## Re: trigonometric equation 2)

Originally Posted by deathmate
i need to prove that the left side is equal to the right!
It doesn't!