## lala2 2 years ago Hello?

1. GoldPhenoix

Hello. Do you need help?

2. lala2

use a unit circle and 30 60 90 triangle to find value in degrees.. tan ^-1 sqrt 3

3. lala2

|dw:1369790876325:dw|

4. lala2

can someone help

5. lala2

@onedirection822

6. lala2

@arykk

7. satellite73

look on the unit circle to find where the second coordinate is $$-\frac{\sqrt{3}}{2}$$ and the first coordinate is $$\frac{1}{2}$$

8. satellite73

oops sorry, should be second coordinate is $$\frac{\sqrt{3}}{2}$$ and first coordinate is $$\frac{1}{2}$$

9. lala2

what does that look like?

10. satellite73

you will find it on the last page of the attached cheat sheet

11. lala2

|dw:1369791474788:dw|if you have a unit circle like this

12. satellite73

unit blob? look at the cheat sheet i sent, on the last page you see the unit circle

13. lala2

haah! thats mean!

14. lala2

ok ... but where exaclty is it?

15. satellite73

look at the angle of $$\frac{\pi}{3}$$ and you will see that the second coordinate is $$\frac{\sqrt{3}}{2}$$ and the first coordinate is $$\frac{1}{2}$$ and so $\tan(\frac{\pi}{3})=\sqrt3$

16. lala2

i dont understand all of the symbols

17. lala2

@satellite73 right here

18. lala2

@satellite73 what do i do next

19. satellite73

that is all

20. lala2

but it says to use 30 60 90 triangle

21. satellite73

oh you are working in degrees. not problem since $$\tan(60)=\sqrt3$$ you know $$\tan^{-1}(\sqrt3)=60$$

22. satellite73

|dw:1369791928159:dw|

23. satellite73

tangent is opposite over adjacent is $$\sqrt3$$

24. lala2