Question

Quick question before quiz: How do i find pi/12?

Answer 1

Hello again Nnesha

Answer 2

divide that into two angle
what two radian on the unit circle add up to pi/12

Answer 3

heya! :=))

Answer 4

ummm, I actually have no Idea

Answer 5

http://www.regentsprep.org/regents/math/algtrig/att5/600px-Unit_circle_angles_svg.jpg here is a unit circle

Answer 6

btw it's just pi/12 or
sin(pi/12)
is there any ratio with pi/12 ?

Answer 7

i guess we have to use addition formulas

Answer 8

O_O

Answer 9

hmm what ???

Answer 10

would a ratio be pi/6?

Answer 11

pi/6+ what = pi/12

Answer 12

btw you can subtract or add doesn't matter

Answer 13

\[\frac{ \pi }{ 12 } = \frac{\pi}{4} - \frac{\pi}{6}\]

Answer 14

right pi/4 - pi/6=pi/12
and both angle pi/4 and pi/6 are on the unit circle

Answer 15

how does that happen? pi/4+pi/6 get me pi/12

Answer 16

what's the common denominator \[\frac{ \pi }{ 4 } +\frac{\pi}{6}\] ??

Answer 17

6

Answer 18

or 12 ^_^

Answer 19

hmm it's not 6
if the denominators aren't the same then we should multiply them
\[\huge\rm \frac{ a }{ \color{ReD}{b} }+\frac{c}{\color{blue}{d}}\]
\[\rm \frac{ ??+?? }{ bd }\]
when we find common denominator we should multiply
-numerator of first fraction by the denominator of 2nd fraction
-multiply numerator fo 2nd fraction by the denominator of first fraction
\[\rm \frac{ a\color{blue}{d}+c\color{red}{b} }{ bd }\]

Answer 20

so with that formula, we get pi/24

Answer 21

hmm
\[\large\rm \frac{ \pi }{ \color{Red}{4} } +\frac{\pi}{\color{blue}{6}}\]
\[\rm \frac{ \color{blue}{6}\pi+\color{red}{4}\pi }{ 24 }\]

multiply the numerator of first fraction by the denominator of 2nd fraction
and multiply multiply the numerator of 2nd fraction by the denominator of first fraction
in other words cross multiply
there is another way to find common denominator