/sci/ - Science & Math

>>3949964
inb4 homosex

Are you still in high school?

>>3949979
No.

OP here,
If you haven't guessed yet, I'm taking precalc and I want to be an engineer.

i think i only use 1-2 trig identities

you'll figure out which ones those are by 3rd year

>Also, how difficult do math classes get after precalc(trig)?
Precalc is not math. Calculus is not math. Analysis is math.

Real men of science just need to remember the unit circle.

>If you can't derive a trig identity on the spot from the unit circle you should an hero.

>>3950008
How difficult does is calculus compared to trig?

>>3950010 If you can't derive a trig identity on the spot from the unit circle you should an hero.
Remarkable what you can do in your head,
<div class="math">\mathrm{arcsin}(z)=-\mathrm i\;\log\left(\mathrm i\,z+\sqrt{1-z^2}\right)</div>

>>3950029
whoops exclude "does"

>>3950008
Fuck off, you stupid pathetic loser.
Does being here and making fun of people who know less than you make you feel smart?
Not everyone spends their time in the books 20 hours a day like you do.

>>3950044
Haha

>>3950044
That isn't teasing, those were trufax.

>>3950029
I never learned trigonometry or calculus at the university. We spent 5 minutes in the lecture showing that the series of the sine converges for all arguments, we had to show that <span class="math">\sin^2+\cos^2=1[/spoiler] in the homework, that's it. You don't calculate things in math. Doing so might help you understand the lecture, but that's what homework and self-study is for.
Math is something you usually don't learn in school: it's proving things, worrying about uniqueness and existence.

>Not everyone spends their time in the books 20 hours a day like you do.
My weekend wasn't particularly nerdy, since I forgot my books when I went to a bar with friends. I repeated the mistake while skydiving.
And sorry for popping your "wow I can find derivatives I'm Euler" bubble.

>>3950059
I'll give you $100 if you pie Josef and post proof

Oh, and
>How useful are trig identities in engineering?
I'd say they're important, but you don't need to memorize them. If you see one, you look it up or let some computer program do the algebra.
>Specifically proving trig identities.
Useless. (That is not to say it's useless to know how you would derive them, I'm just saying you don't need to do it. Using complex representations is usually a good start.)

>>3950080
I like you. I'm going to call you Pie Guy for now on if you are the same person who is always asking for me to throw a pie at Josef

>>3950080
He'll never make it through the hazardous fog my neighbours from below produce when cooking. It makes me cough every time I walk past their door, but I'm starting to hold my breath automatically. (Not sure how they do it. Burning grease and adding pepper spray or something.)

>How useful are trig identities in engineering?
You could've asked the same question about multiplication.

>>3950102
Lol, well see bro.
What exactly are you studying here?

>>3950132
Which isn't that important because multiplication is just addition.

>>3950139 What exactly are you studying here?
I'm a physics freshman.

>>3950139
Biology.

>>3950148
I hope you mean first year grad.

>>3950152
That would've been first year grad then, huh?

>>3950160
>>3950148
Cute. I could have used your physics abilities last year.. Oh well

>>3950160
Oddly, we don't use fresh/soph for Grad students. At least I've never heard it used.

>>3950148
I have a friend at Rutgers, I think he's postdoc in physics depratment. Maybe you know him, he's russian guy (although I guess he's not the only russian there).

>>3950167
I'll worry about that once I get my Bachelol of science degree in four years.

>>3950172
There are roughly as many Russian grads as there are US ones here. (And then a lot of chinese people.) Undergrads seem to be from the country though.

>>3950173
wtf, don't you have a german university degree?

>mfw my goal is a degree in biomechanics / biomechanical engineering and I haven't done trig for 2 years and know fuck all about it as a second year

is this bad?

>>3950179
Yes. (And most of the above was nonsense.)

>>3950185
y u so y

>>3950185
Proof that Europeans are the funniest people on Earth

>Flood detected, post discarded

>>3950189
I guess there aren't that many Josefs around with some degree, so posting the combination would basically reveal my identity to someone who's willing to, say, throw pie at me. For that reason, I'm usually a freshman, professor, or highschooler if somebody asks me for my degree.

>>3950207
I think the niggardly pie man would have pieced it all together just as I have.

>>3950214
by now*

>>3950214
I already know more about Josef than I should

>>3950148
>first year
>mfw I thought you were undergrad
>mfw i have no face

>>3949964

Eventually you'll learn that you can just jam the equation onto your calculator and get the answer without any trigonometric property.

>>3950228
Either you're trolling, or in engineering mathematics is waay simpler than in physics (and by simpler I mean high-school level).

>>3950237
It is. There's a reason people bag on engineers so much.

>>3950228
>Plug n Chug

>>3950237
>engineering
>mathematics

choose one, only one