trigonometric equation 2)

**deathmate** · September 8th 2011, 12:59 AM

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

**Prove It** · September 8th 2011, 01:13 AM

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?

**deathmate** · September 8th 2011, 02:12 AM

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!

**Prove It** · September 8th 2011, 02:27 AM

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?

**anonimnystefy** · September 8th 2011, 03:12 AM

hi PI

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

**deathmate** · September 9th 2011, 01:18 AM

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

**Prove It** · September 9th 2011, 03:40 AM

Originally Posted by deathmate

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

It doesn't!

Thread: trigonometric equation 2)