# Thread: does anyone know how to do these?

1. ## does anyone know how to do these?

I was just wondering if someone could help me with these problems.

*=theta

1) add, then simplify. (1/1-cosx) + (1/1-cosx)

2) simplify: sinx+sinxcot^2x

3) find all solutions in the interval [ 0, 2pie): cosx-1=0

4) find all solutions in the interval [ 0, 2pie): 1+tan^2*+tan^4*-1

5) find all solutions in the interval [ 0, 2pie): 2sin^2x=sinx

6) find all solutions in the interval [ 0, 2pie): sin2x=0

7) find all solutions in the interval [ 0, 2pie): 2cos(x/2)-sqrt3=0

8) simplify: (tan7x+tan6X)/(1-tan7x)(tan5x)

2. Originally Posted by ixibelieve
I was just wondering if someone could help me with these problems.

*=theta

1) add, then simplify. (1/1-cosx) + (1/1-cosx)

2) simplify: sinx+sinxcot^2x

3) find all solutions in the interval [ 0, 2pie): cosx-1=0

4) find all solutions in the interval [ 0, 2pie): 1+tan^2*+tan^4*-1

5) find all solutions in the interval [ 0, 2pie): 2sin^2x=sinx

6) find all solutions in the interval [ 0, 2pie): sin2x=0

7) find all solutions in the interval [ 0, 2pie): 2cos(x/2)-sqrt3=0

8) simplify: (tan7x+tan6X)/(1-tan7x)(tan5x)
1. The title of a post is meant to be a brief description of what the question is about. Your post title is useless for this purpose. Especially since it's a given that someone does know how to do them.

2. Please don't post more than two questions in a thread. Otherwise the thread can get convoluted and difficult to follow. It is better for forum organization and better for you to get your questions answered in a more timely manner if you start new threads as necessary for remaining questions. eg. If you have five questions, post two of them in two threads and start a new thread for the remaining one etc.

And if the question has more than two parts to it, it is best to post only that question and its parts in the thread and start a new thread for other questions.

Your thread has been closed, please re-post keeping the above in mind.