Trigonometry review

[@melvoid69]

when u have a trig test tmr and u had to learn a whole subject real quick before bed, he is the soldier we all needed update: i got a 25% oops

[@olimon3790]

Im about to follow in your footsteps

[@JoeMama-ub9zn]

@@olimon3790 start studying from now on

[@JoeMama-ub9zn]

start studying from now on

[@olimon3790]

@@JoeMama-ub9zn i passed lmao. But yeah, this year im actually studying for quizzes and so far its going great

[@JoeMama-ub9zn]

@@olimon3790 good job

[@bardofhighrenown]

I took trigonometry about 9 months ago, and now that I'm in Calc II, the importance of tangent being a slope was kind of a cool moment of something you already knew taking on new meaning.

[@jcrawford5674]

When you have calculus and haven't taken a math in a year 🙃

[@FireKraftStudios]

Lol good luck with that

[@Pokemonzeldabro]

Me too buddy

[@oreh424]

Try 15 years

[@jerwellsavella97]

I have calc in my Engineering class and I haven't had any type of math for more than 2 years💀

[@noli5163]

going back to school after dropping out 5 years ago... so I haven't done calc in 5 years lol

[@Maria-zc1dx]

Cramming for finals like

[@4amcuriosity162]

and here i am just here for fun

[@melvingrace1390]

@@4amcuriosity162 what on earth are you smoking

[@khalidbornaparte6250]

SOH CAH TOA is important don't forget that statement

[@0xMA]

That very thing saved me during my exams

[@omariqbalhamid280]

That’s beginner trig

[@jeffthevomitguy1178]

Syr Cxr Tyx > Soh Cah Toa

[@TheLemon420]

The last part where you show how tan theta=slope was never explained to me like that. not sure why but it makes so much sense now.

[@ComputerCurry]

Thanks for the simple and straightforward explanation!

[@Lee-eo2by]

Where's sal?!?

[@spacelemming0128]

Bro doesn't know where Sal is💀💀

[@4amcuriosity162]

can someone please explain to me why we can just divide degrees by pi which is in radians?? why at the end, did he just take the degrees° sign off of the 180 and divide it by pi. how does this work. thank you.

[@erikfoster5798]

If you need to convert units - degrees to radians ... multiply by (pi/180) radians to degrees ... multiply by (180/pi)

[@slykhajiit2]

180 degrees is equal to pi rad. Multiplying a circle's radius (radian) by pi (pi radians) will give half the circle or 180 degtees. Diving the two (180 and pi rad) will give you 1. It's used for conversion

[@jcrawford5674]

Pi=180°, 2pi =360°

[@bardofhighrenown]

Because 180 degrees and pi represent the same point on the unit circle. If you take 180 degrees and divide it into units of pi (the equivalent point in radians) you will get the number of degrees in 1 radian. As for dropping the degrees, it's similar to how in story problems you often will omit the units of ft or cm or whatever and add them back in at the end. It's not technically correct but is extremely common.

[@jefferyturner4970]

Super-Big help - Jeff, BSEE 1976

[@curtpiazza1688]

I remember SOH CAH TOA ! Great stuff! 😂

[@catalinul5700]

You forgot about x^2 + y^2 = 1 From where you get other trigonometry ecuations.

[@4amcuriosity162]

>ecuations

[@omariqbalhamid280]

It's actually cos ^2 θ + sin ^2 θ = 1

[@judgementcl]

@@omariqbalhamid280 Are those not the same?

[@jzeltz8181]

@@judgementcl they are

[@shinyshinx789]

Thanks I've got a math test today

[@sanskritid8590]

So you are telling me, electrical engineers at your place study such basic trigo which i was taught in grade 8?

[@imapanda2434]

Your name suggests that you might not be American. I want you to lower your expectations on the education we get here.

[@user-kt1no7yx1u]

​@@imapanda2434 I'm in America and this is 9th-10th grade stuff where i am????

[@imapanda2434]

@@user-kt1no7yx1u Yes, quality of education varies wildly depending on which school district you are in, usually correlated with economic class, like most things here.

[@annabluebubblegum]

We can’t use calculators with on-ramps I need helpp

[@heraldjames6545]

This really helps.

[@ArmodSagar]

good lecture on math

[@alexanderlevy158]

Isn't y/x 'run over rise' in that example? And isn't x opposite, not adjacent?

[@gotouguts2066]

No to both questions and I'll explain. So however many units long "a" would be can be counted by number of units right from 0 on the x-axis; however many units high "o" would be can be counted by however many units high on the y-axis. As for your other question, y is high and x is long- rise/run.

[@o1OrangeLeopard]

Don't mind me, just taking the act next week.....

[@duckduckgo604]

Thank you sir

[@sweatstallion8437]

Lets get it

[@Dameleon6]

thx

[@juand5646]

More like soh cah TUAH, imma right?

[@andreirafaellacuna7567]

Ahak wala ko kasabot

[@matthewgerman1618]

boces

[@doctorpill-fake]

Cramming for placement testing 🙏