wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

If the angles of a triangle ABC be in A.P., then

A
c2=a2+b2ab
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
b2=a2+c2ac
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C
a2=b2+c2ac
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
b2=a2+c2
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is B b2=a2+c2ac
A, B, C are in A. P. then angle B = 60o,
cosB=a2+c2b22ac,{since A+B+C=180oand A+C=2BB=60o}12=a2+c2b22ac=acb2=a2+c2ac.

flag
Suggest Corrections
thumbs-up
3
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Cosine Rule
MATHEMATICS
Watch in App
Join BYJU'S Learning Program
CrossIcon