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.

[thedeathofbirth]

Jensen, I think the answer in HW2, number 1 part C should either be 160 due East or (-160) m . number 5 part b) DB number 7 part e ) CB

Also thank you so very much for designing such effective and efficient lesson plans and HW assignments, so that if the students do the work, their success in university is assured! Thank you for saving us time. You work hard so that we don't have to...Cheers!

[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💯🙏

[rollamichael]

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.

[biancamanescu]

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

[arturgheorghita]

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

[KSW]

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.

[llnnythfjj]

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