Q. If vector A=i+j and vector B=i-k, the angle between vector A and B is

A)zero B)180degree C)60degree D)90degree

Question

Q. If vector A=i+j and vector B=i-k, the angle between vector A and B is A)zero B)180degree C)60degree D)90degree

Pavan kumar · Answer

|A| = |B| = 2^1/2 A.B = 1 Hence angle between A and B is cos-1(A.B/(|A||B|)) = cos-1(1/2) = 60 degrees.

pavan shete · Answer

DEAR, A=(1,1,0) MAGNITUDE OF A =[A]=SQRT(2); B=(1,0,-1) ;[B]=SQRT(2); A.B=(1*1)+(1*0)+(0*-1)=1 A.B=[A][B]COS(THETA); 1=2*COS(THETA); COS(THETA)=1/2; HENCE THETA =60 DEGREES; OPTION C IS ANSWER.

Thank you for registering.

Register Now and Win Upto 25% Scholorship for a Full Academic Year !

Enter Your Details

Registration done!

Q. If vector A=i+j and vector B=i-k, the angle between vector A and B is A)zero B)180degree C)60degree D)90degree

Q. If vector A=i+j and vector B=i-k, the angle between vector A and B is

A)zero B)180degree C)60degree D)90degree

2 Answers

Think You Can Provide A Better Answer ?

Provide a better Answer & Earn Cool Goodies See our forum point policy

Other Related Questions on Vectors

ASK QUESTION

Answer and earn gift vouchers

View courses by askIITians

Design classes One-on-One in your own way with Top IITians/Medical Professionals

Complete Self Study Package designed by Industry Leading Experts

Live 1-1 coding classes to unleash the Creator in your Child

a Complete All-in-One Study package Fully Loaded inside a Tablet!

Register Now & Win Upto 25% Scholorship