1. cotx= (quotient identity)

2. Answer

3. sinx= (reciprocal identity)

4. Answer

5. cot 2 x= (Pythagorean identity)

6. =csc 2 x-1 Answer

7. tanx= (reciprocal identity)

8. Answer

9. sin 2 x= (Pythagorean identity)

10. =1-cos 2 x Answer

11. tanx= (quotient identity)

12. Answer

13. tan 2 x+1= (Pythagorean identity)

14. =sec 2 x Answer

15. cosx= (reciprocal identity)

16. Answer