Math, asked by Pritipandiri6790, 1 year ago

Consider 2 vectors f1 =2i+5j and f2 =3i+4j the magnitude of scalsr product js

Answers

Answered by prateek2111

Step-by-step explanation:

Scaler product or dot product is given as:-

= F1 . F2

= (2i + 5j).(3i + 4j)

= 6 + 20

= 26

This is the required answer...

prateek2111: u have just simply added the vectors

dishu4916: but why you did that step bro

dishu4916: you are wrong brother

prateek2111: in order to find the magnitude

dishu4916: you need an angle first then you have to put that is //gm law

prateek2111: Bro u need to study abroad and when u will study in class 12 ; u will understand that u don't need angle to find magnitude in scaler product

dishu4916: brother but you have to atleast parallelogram law but you have simply added that

prateek2111: u don't understand what i m saying.. u r wrong dear ..... u may consult u r teachers

dishu4916: sorry brother angle btw them is 90° and cos 90° is 0 okay brother and sorry

dishu4916: brother i understood my mistake thank you brother

Answered by dishu4916

Answer:

6i + 20j

Step-by-step explanation:

dot products are simply multiplied by simple maths until you have to find magnitude

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