## anonymous one year ago Evaluate the expression without using a calculator. sin pi/6 + cos pi/6 I'm so lost on how to do this :/

1. anonymous

sin pi/6 +cos pi/6 this is same as sin 30 + cos 30

2. anonymous
3. anonymous

because pi=180

4. anonymous

Oh okay I understand now. Thanks

5. anonymous

sin30= 1/2 and cos 30= $\sqrt{3/2}$

6. anonymous

now solve $1/2 +\sqrt{3/2}$

7. anonymous

It says in the back of the book that its $1+\sqrt{3}/2$ but idk understand how they got the radical

8. anonymous

from the unit circle

9. anonymous

so, 1+$\sqrt{3}/2$ is the answer

10. anonymous

Oh I kind of see

11. anonymous

nevermind I do see now

12. anonymous

its just simple.since they have same denominator, you just add the numerators

13. anonymous

solve, 1/2+1/2= ?

14. anonymous

1

15. anonymous

very correct. now you understand

16. anonymous

thats all