Vectors, given dot and cross product equations
I haven't looked at the solution, I want to know how to think about these types of problems
10 Replies
@Apu
Note for OP
+solved @user1 @user2... to close the thread when your doubt is solved. Mention the users who helped you solve the doubt. This will be added to their stats.Not sure what to do with that second equation
Note that c vector and cxa are perpendicular to each other.
So basically magnitude of b vector has perpendicular components c and 2(cxa)
Now just do $\sqrt{\abs{\vec{c}}^{2}+(2\abs{(\vec{c} \cross \vec{a})})^{2}}$
Option c
?
Yup, this
Wait what's the latex for cross product?
Ah thanks
SirLancelotDuLac
And set this equal to |b|
Which is just one
So you can just square on both sides
yep, got it
hopefully i get better at spotting these things
+solved @SirLancelotDuLac
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