10th Trigonometry Identities Evaluate the following: 1. 2.

10th Trigonometry Identities
Evaluate the following:
1.
2. Sec 500 Sin 400 + Cos 400 Cosec 500
3.
4.
5.
6.
7.
8.
9.
10. tan 350 tan 400 tan 450 tan 500 tan 550
11. tan 70 tan 230 tan 600 tan 670 tan 830
10th Trigonometry Identities
12. tan 50 tan 250 tan 300 tan 650 tan 850
13.
14.
15.
16.
17.
18.
19. Express sin 810 + tan 710 in terms of trigonometric ratios of angles between 00 and
450.
20. Express cos 750 + cot 750 in terms of trigonometric ratios of angles between 00 and
450.
21. If
where
are acute angles, find the value of
22. If A and B are acute angles and sin A = cos B, Prove that A + B = 90 0.
10th Trigonometry Identities
23. If A, B, C are the interior angles of a triangle ABC, show that show
that
24.
25.
26.
Answers
1. 0
2. 2
3. 2
4. 0
5. 0
6. 0
7. 1/2
8. 1
9. 1
10. 1
11.
12.
13. 0
14. 2
15. 1
16. 2
17. 2
18. 2
19. cos 90 + cot 190
20. sin 15 0 + tan
15 0
21. 280