Question

If the sin 30° = 1 over 2 , then the cos 60° = _____.

How and why???

Answer 1

@Zeronknight

Answer 2

I think I have an idea, but I'm not so sure :P. I may not be the best person to do this. Try tagging mathmale by putting an @ before his name. Like @mathmale

Answer 3

@mathmale

Answer 4

@Zeronknight regardless, can you elaborate your idea, surely its better than what im thinking

Answer 5

30' = 1 over 2.
If 30 is 1 over 2.
Then what is 60? Hint 60 is 30 just doubled ;)

Answer 6

Again, I'm not so sure if this is even correct.

Answer 7

so just 1 perhaps?

Answer 8

i mean thats what i wrote down

Answer 9

it can also be scary fractions

Answer 10

60 is 30 doubled. What happens to the 1 over 2?

Answer 11

@pooja195

Answer 12

that is an awesome name

Answer 13

I know isn't it? :P

Answer 14

Haha thanks unfortunately i don't do trig ;~;
Perhaps @imqwerty might know. ^_^

Answer 15

@AlexandervonHumboldt2

Answer 16

Darn common core

Answer 17

yeah, just called up afriend, he said it was one, because they are complementary

Answer 18

@mathmale
@TheSmartOne

Answer 19

but wait... theres more

Answer 20

sin 30 = 1/2
cos 60 = 1/2 as well

Answer 21

okay, i believe i see your point serenity

Answer 22

Google pie chart.
X values = Cosine
Y values = Sine
for trig values

Answer 23

it is a tad bit confusing though

Answer 24

Google Pie chart. I can't really explain to you unless you can hook me up with a pie chart so I can explain it to you.

Answer 25

I would post it here but I can't since I am on my phone and in the car.

Answer 26

okay i googled a pie chart

Answer 27

Attack the picture on here

Answer 28

a blank one?

Answer 29

no a filled one so I can explain it to you

Answer 30

im on a note 4 so ill try

Answer 31

Wait I figured it out one sec

Answer 32

its rooted

Answer 33

I got it one sec

Answer 34

ok awesome, it showed up

Answer 35

It's actually called a Unit Circle but I call it a pie chart BUT it's a Unit Circle.
Okay since you are looking in the 1st Quadrant you look for the degrees you are looking for.
You are looking for 60 degrees right?
Then it's based on what the question is asking you, in radians or values or degrees to, so you look at the x & y values for the values
X- values = COSINE
Y-values = SINE
so when you look at the unit circle Cos 60 = 1/2.
Let me know if you need any help :) I will look for a video on unit circle for you. What math are you taking by the way?

Answer 36

i thought the reply wasnt loading, let me read it rel quick

Answer 37

this is geometry, but i believe this is a portion of basic trig

Answer 38

Oh man I gave you pre-cal but Unit circle does help you ish....Gosh darn it.
Okay geometry *Cringe*
Let me remember how to do it the geometric way grrr.

Answer 39

part of a lesson of solving right triangles

Answer 40

OHHHHHH WOW I love this part of Geometry can you please give me the diagram if you were given one?

Answer 41

um if i can sure, old up

Answer 42

hold up, gahhhhhh i hate typos

Answer 43

Aight if you have a diagram I can explain it to you lol Cause I don't wanna teach you Pre-Calc just yet you have a long way to go. :p

Answer 44

lol,believe me i know. My undertanding of math is so fragmented it is unreal

Answer 45

okay, there are no visible diagrams that i can find for this lesson unfortunately

Answer 46

Hmmmm let me see if I can find anything on this for you :)

Answer 47

alright, thankyou

Answer 48

sin 30° = 1 over 2 denotes the following ratio: opposite side over hypotenuse.

Can you draw this?

Answer 49

music chat?

Answer 50

Never mind, just google, 'Sine, Cosine, Tangent' and then click on mathisfun.com

Answer 51

*on the link that has mathisfun.com

Answer 52

kk

Answer 53

im there

Answer 54

chat is still alive

Answer 55

thankyou mathmale for putting it into a visual perspective for me, it does really help

Answer 56

I am sorry for confusing you thatawayz I tried to look for visuals but couldn't upload them on here sorres!