basic vecotrs

18th one I wanted you guys to check my solution (especially the b. Part) Thanks
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@Gyro Gearloose
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Gaurav
GauravOP10mo ago
C. Part solution
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DarkWhite
DarkWhite10mo ago
Everything is correct except for the theta value in B part since -7k cap and k cap will give just - 7 and not - 7 k cap so value of theta in B part is just cos inverse -7 / under root 195, so yeah all correct except this silly mistake
Gaurav
GauravOP10mo ago
Ohh mb thanks
KaiZên
KaiZên10mo ago
Remember that Dot Pdt is scalar pdt and you should only get a scalar (One method you can correct this silly mistake) :))
Gaurav
GauravOP10mo ago
Ok bro thanks a lot Hey i had a doubt Cross product vale formula (sin theta)se BHI iska angle nikala skte
KaiZên
KaiZên10mo ago
Haan but uske liye aapke paas cross pdt vaala vector nahi hai na
Gaurav
GauravOP10mo ago
Um me smjha nhi 😭
KaiZên
KaiZên10mo ago
Dekho let vector v = r x z (cross pdt of r and z). |v| = |r|.|z|.sin(theta). Abhi cross pdt ke formula se aapko pehle cross pdt nikalna padega, phir uski magnitude and then hi aap cross pdt vaala formula use kar sakte ho. Answering your question, cross pdt se angle nikal sakte ho but it will be very very lengthy
Gaurav
GauravOP10mo ago
MATLAB me mostly for PDT hi use krunga in questions
KaiZên
KaiZên10mo ago
pdt?
Gaurav
GauravOP10mo ago
Yes Dot pdf I mean
KaiZên
KaiZên10mo ago
Nope. Depends purely on the question. Both formulae can be used to give the angle b/w 2 vectors
Gaurav
GauravOP10mo ago
Thanks a lot bro
KaiZên
KaiZên10mo ago
Anytime :))
Gaurav
GauravOP10mo ago
+solved @KaiZên
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