Question

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

Answer 1

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

Answer 2

unit circle
https://en.wikipedia.org/wiki/Unit_circle#/media/File:Unit_circle_angles_color.svg

(cos,sin)

Answer 3

because pi=180

Answer 4

Oh okay I understand now. Thanks

Answer 5

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

Answer 6

now solve \[1/2 +\sqrt{3/2}\]

Answer 7

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

Answer 8

from the unit circle

Answer 9

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

Answer 10

Oh I kind of see

Answer 11

nevermind I do see now

Answer 12

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

Answer 13

solve, 1/2+1/2= ?

Answer 14

1

Answer 15

very correct. now you understand

Answer 16

thats all