Published by:
CGP EDU Academic Team
Published on: August 13, 2026
In a triangle ABC, AB = 2, BC = 4, CA = 3. If D is the mid point of BC, then the correct statement (s) is/are –
A
cos B = 
B
cos C = 
C
AD = 2.4
D
AD2 = 2.5
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
(a, b, d)
cos B = 
= 
cos C = 
= 
In Δ ABD, AD2 = AB2 + BD2 – 2AB · BD cos B
= 22 + 22 – 2 · 2 · 2 · 
= 2 · 5
Obviously AD ≠ 2 · 4.
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