1. Click when ready Whiteboardmaths.com © 2004 - 2008 All rights reserved Stand SW 100 Tregonmitri

2. Page 35 1) 13 5 12 Find the value of sin A, sin B, cos A, cos B, tan A, tan B B A C Answer Assignments sin A = sin B = cos A = cos B = Tan A = Tan B = OK

3. Page 35 2) 1 1 Find the value of sin A, sin B, cos A, cos B, tan A, tan B B A C Answer Assignments sin A = sin B = cos A = cos B = Tan A = Tan B =

4. Page 35 3) 4 3 Find the value of sin A, sin B, cos A, cos B, tan A, tan B B A C 5 Answer Assignments sin A = sin B = cos A = cos B = Tan A = Tan B =

5. Page 35 4) 4 Find the value of sin A, sin B, cos A, cos B, tan A, tan B B A C 5 Answer Assignments sin A = sin B = cos A = cos B = Tan A = Tan B =

6. Page 35 From the image and value of tregonometry ratio find x of each following Answer Assignments B A C Opposite of A is BC x = A ok ข้าม ฉาก

7. Page 35 From the image and value of tregonometry ratio find x of each following Answer Assignments B A C Opposite of B is AC x = B ok ข้าม ฉาก

8. Page 35 From the image and value of tregonometry ratio find x of each following Answer Assignments B A C Adjacent of A is AC x = A ok ชิด ฉาก

9. Page 35 From the image and value of tregonometry ratio find x of each following Answer Assignments B A C Adjacent of B is BC x = B ok ชิด ฉาก

10. Page 35 From the image and value of tregonometry ratio find x of each following Answer Assignments B A C Opposite of B is AC x = B ok ข้าม ชิด

11. Page 35 From the image and value of tregonometry ratio find x of each following Answer Assignments B A C ข้าม ชิด Opposite of A is BC x = A ok

12. Page 36 3. Find the tregonometry ratio B A C c b a Answer Assignments Sin Cos Sin

13. Example For the trigonometric tables find the value of trigonometry ok

14. Example For the trigonometric tables find the value of trigonometry ok Solution มุมของ sin เพิ่มขึ้น 1 องศา ค่าเพิ่มขึ้น 0.891 – 0.883 = 0.008 มุมของ sin เพิ่มขึ้น 0.5 องศา ค่าเพิ่มขึ้น ดังนั้น

15. Example For the trigonometric tables find the value of trigonometry ok Solution มุมของ cos เพิ่มขึ้น 1 องศา ค่าลดลง 0.848 – 0.839 = 0.009 มุมของ cos เพิ่มขึ้น 0.5 องศา ค่าลดลง ดังนั้น

16. Given the value of tregonometry Example ok

17. Homework Page 36 4. Find the value of trigonometice

18. Homework Page 36 5.Determine the size of the A when sin A given to the following.

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