1. Find the exact value of tan 0^0 + cos 90^0 - sin 0^0.

2. Find the exact value of sec 30^0 - sin 45^0 + sin 90^0.

3. Find the exact value of cosec 30^0 + cosec 60^0 + cosec 90^0.

4. Find the exact value of cot 30^0 - tan 0^0 + cos 60^0.

5. Find the exact value of sin 30^0 + cos 0^0 + tan 30^0.

6. Find the exact value of cos 60^0 - cot 30^0 - cot 90^0.

7. Find the exact value of tan 30^0 + sin 90^0 + cot 60^0.

8. Find the exact value of sec 60^0 - cosec 30^0 - sin 0^0.

9. Find the exact value of cosec 60^0 + sec 30^0 + sin 60^0.

10. Find the exact value of cosec 90^0 + cot 30^0 - tan 0^0.

Help please if you understand this :/