Use app×
Join Bloom Tuition
One on One Online Tuition
JEE MAIN 2025 Foundation Course
NEET 2025 Foundation Course
CLASS 12 FOUNDATION COURSE
CLASS 10 FOUNDATION COURSE
CLASS 9 FOUNDATION COURSE
CLASS 8 FOUNDATION COURSE
+1 vote
106k views
in Mathematics by (52.5k points)

A vector a = αi + 2j +  βk(α, β ∈ R) lies in the plane of the vectors b = i + j and c = i - j + 4k. If vector bisects the angle between vector b and vector c, then:

(1) a. i + 1 = 0

(2) a . i + 3 = 0

(3) a.k + 4 = 0

(4) a.k + 2 = 0

2 Answers

+1 vote
by (58.3k points)
selected by
 
Best answer

Answer is (4) a.k + 2 = 0

by (10 points)
So there will always be 2 possible answers? In case of multiple correct question, we have to check both cases then right?
+1 vote
by (54.8k points)

Answer is (4) a.k + 2 = 0

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

...