Answer students' questions and become popular!

Algebra ->  Tutoring on algebra.com -> Answer students' questions and become popular!      Log On


The position vector of the points A,B,C are i+j+k,i+5j-k and 2i+3j+5k,
respectively.The greatest angle of the triangle ABC is
(a) 135 (b)90
You have to be a registered user to answer this question!
This feature of our site requires you to log in or register.
Click here to register, it is free!

Username:
Password:
Register in one easy step!. Reset your password if you forgot it.