trigonometry

[daring warren]

I got the y value to be 5
not sure where to go from there

[untold zephyr]

1. Wait patiently for a helper to come along.
2. Once someone helps you, say thank you and close the thread with:

+close

3. Feel free to nominate the person for helper of the week in #helper-nominations
4. Do not ping the mods, unless someone is breaking the rules.
5. If you're happy with the help you got here, and the server overall, you can contribute financially as well:

[blazing axle]

How many radians apart are the peaks of a sine wave?

[daring warren]

1 period?

[blazing axle]

Half a period

Because after one period youd be back at the same point, the very top

[daring warren]

right

how do you determine what a period even is though

[blazing axle]

Usually its easiest to just visually determine it

[daring warren]

by plotting points or..

because i feel not enough info is given

[blazing axle]

Well they say the x axis is radians so I think that just means its a normal sine wave

No horizontal stretching

[daring warren]

hm

I'm not sure how wide a sinewave usually is

[blazing axle]

Well a sine wave is just the y value of a circle right

[daring warren]

right

[blazing axle]

And how often in radians does a circle repeat itself

[daring warren]

twice in 1 loop

oh wait

2 pi

[blazing axle]

Ye 2pi

And if you think about it sine waves also have a period of 2pi

[daring warren]

hm

[blazing axle]

Imagining how itd move up and down

You can also just put it into desmos and look

[daring warren]

but it says that it's horizontally shifted

how would you know by how much

to determine the actual period

[blazing axle]

A horizontal shift doesnt change the period

It will just move the whole thing over a bit

A horizontal stretch certainly would change the period but a shift wont

[daring warren]

okay, so assuming it's 2pi then how would you find

x?

when it's at the lowest

is there an algebraic way or are you suggesting to just see it on desmos

[blazing axle]

Well if the peak is at pi/13 and the the lower peak is pi away from that then you can just find it like that

[daring warren]

2pi/13?

or pi/6.5

[blazing axle]

Youd just add them together right

Like if you said at time=5 youre at the top of a hill and 10 seconds later youre at the bottom of the hill

The time youre at the bottom of the hill is just 5+10=15

[daring warren]

makes sense

but you have pi/13

what would you add it with

pi?

[blazing axle]

Ye

[daring warren]

14pi/13

[blazing axle]

Because youre at the top at pi/13 then pi radians later youre at hte bottom

Yeah

[daring warren]

oh shoot that's correct

thanks for your help

[blazing axle]

No problem Im glad to help

[daring warren]

+close