## anonymous 4 years ago pre-cal Find (a) sin a and cos B, (b) tan a and cot B, and (c) sec a and csc B.

1. anonymous

|dw:1347217242148:dw|

2. anonymous

since this is a right triangle, can you give me the length of the hypotenuse?

3. anonymous

hello?

4. anonymous

meow?

5. anonymous

so would i do the pythag. theorm?

6. anonymous

yes....

7. anonymous

what do i do after that?

8. anonymous

do you know the definition o the trig functions? or better yet, the acronym: SOHCAHTOA: Sine = Opposite/Hypotenuse Cosine = Adjacent/Hypotenuse Tangent = Opposite/Adjacent

9. anonymous

yes

10. anonymous

ok... so once you have the hypotenuse, you can determine the trig ratios for the angles that you want....

11. anonymous

so... what do you have for the length of the hypotenuse?

12. anonymous

$\sqrt{34}$

13. anonymous

|dw:1347218499018:dw| now you can you determine the trig ratio's???

14. anonymous

okay thanks

15. anonymous

yw...:)

16. anonymous

@catgirl17 Do you want to post your result, so we can double check?

17. anonymous

okay

18. anonymous

a) $3\sqrt{34}/34$ $5\sqrt{34}/34$

19. anonymous

a) the result should be the same: 3/ √ 34 ( 3√ 34/ 34 )

20. anonymous

why?

21. anonymous

b) 3/5 , 5/3 c) $\sqrt{34}/5$ , $\sqrt{34}/3$

22. anonymous

sinA = opp/ hyp = 3/√ 34 cosB = adj/ hyp = 3/√ 34

23. anonymous

When you can fix your a) then go ahead fix b) and c)

24. anonymous

b) 3/3, 3/3 c) $\sqrt{34}/3$ $\sqrt{34}/3$

25. anonymous

b) tanA = opp/ adj = 3/5

26. anonymous

okay

27. anonymous

C) secA = hyp/ adj = √ 34/5

28. anonymous

okay

29. anonymous

@catgirl17 That's the reason you need to volunteer post your working solution, so we can help you through the correct final result!