i need it as soon as possible

it is 9 qustion i need it with full steps 

Math 125 Pre-Calculus NAME:______________________________

Spring 2013, Kenny Shah CLASS Time:_________________________

In-Class Assignment # 9 (Chapter 9 and 10.1)

Please show all of your work for maximum credit. Good Luck!!!

1. Simplify the following expressions:

( a )

( b )

2. Use algebra to prove the following identities:

( a )

( b )

3. Find the exact solutions of the following equations:

( a )

( b )

4. If express in terms of x.

5. Write the following equation using single sine function.

( a )

( b )

6. Find the exact values for the following:

( a )

( b )

7. Find a simplified formula for the difference quotient

( a )

8. Let , ,,and , find the following:

( a )

( b )