6.2 Vector Addition & Subtraction (full lesson) | grade 12 MCV4U | jensenmath.ca

Learn how to add and subtract geometric vectors. When adding vectors place them tip to tail and when subtracting either add the opposite or place tail to tail.
Supporting resources: www.jensenmath.ca/12cv-l2-vec...

[@titiaroa]

I AM ONLY grade 9 student and I am learning this all . Ethiopian education is the hardest one in the world. and now I am trying hard to understand it😮‍💨🤔😌🤤😃. thank you for make it easy this lesson💯🙏

[@AbenezerTewodros-vs8lk]

Also from Ethiopia 9th grader🙏🙏🙏

[@ice-sugar.]

This is one of the best explanations!🎉🎉

[@williamwelmans8648]

A lovely lesson! Thanks.

[@arslanmoghal5472]

Nicely explained, thanks

[@AbdulahiAadan-hn9vb]

Helpful !
Thank you so much.

[@arturgheorghita4157]

why is this video have 19 k when its the best ?

[@miketaylor3947]

Having apparently forgotten how to do simple math, I got twisted around the axle with example 5, airplane flying south 300km/h wind from the west at 100km/h: ua-cam.com/video/CpuYFUXe-gg/v-deo.html
Because.... it's calculating drift angle and resultant ground speed whereas I have been working on calculating wind correction angle, used for setting true heading, and calculating resultant ground speed from that. Drift and Ground Speed w/Drift != WCA and Ground Speed w/WCA.
Drift and Ground Speed w/Drift work out exactly as the video explains. However, no need to cheat knowing the 90-degree angle because using that does not lead to a generalized solution. Rather than r = sqrt (ws**2 + ts**2), go ahead and use r= sqrt (ws**2 + ts**2 - 2*ws*ts*cos (tc-wa)).
Wind Correction Angle and Ground Speed w / WCA
The spreadsheets I've found use the law of sines to calc WCA and cosines to get GS:
WCA = sin-1 ( (WS / TS) sin (WA - TC) ) = 19.4 degrees for a true heading of 199.4 degrees (using N as 0 degrees, E as 90 degrees etc.).
GS = sqrt (WS**2 + TS**2 - 2*WS*TS*cos (TC-WA+WCA)) = 282.8 km/h.

[@KSW7]

Wait in13:25 Tail to Tail method, why is vector b not the other way around? The way he drew it would make it a positive vector of b.

[@MrRobot-jb5tl]

The point of tail to tail is to work without changing the direction of the vectors. Vector b is turned the other direction to make the question like an addition problem, while the tail to tail does subtraction and addition.

[@biancamanescu4911]

Wait this is grade 12? In my country this is grade 9 and I am 15 and I am struggling

[@novembero4769]

Congrats 🥳

[@KSW7]

what country r u ffrom?

[@amenterekegn7485]

Yep in my country this topic is grade 9 th

[@esmaelhayru4688]

am like u

[@Amazon_River677]

yep same as m3 2@@esmaelhayru4688

[@llnnythfjj6341]

This is grade 12 ?! in my international school in Saudi Arabia This is grade 10 😢

[@navamiprasanth358]

Haha this is just base they dont ask these in exams