Falling Behind in Studies? Join Our Performance Improvement Batch. Enroll For Free
One of our academic counsellors will contact you within 1 working day.
Click to Chat
1800-1023-196
+91-120-4616500
CART 0
Use Coupon: CART20 and get 20% off on all online Study Material
Welcome User
OR
LOGIN
Complete Your Registration (Step 2 of 2 )
If in a triangle ABC a Cos*2(c/2)+cos*2(A/2)=3b/2 then the sides a,b,c are
we know cosC=2cos^2(C/2)-1 so, a(1+cosC)/2+c(1+cosA)/2=3b/2 a+acosC+c+ccosA=3b a+c+(acosC+ccosA)=3b Using By projection formula: (acosC+ccosA)=b a+c+b=3b a+c=2bThis shows that a,b,c are in A.P.thank you. my name : ashu mehta (bupp), (sirsa)
Post Question
Dear , Preparing for entrance exams? Register yourself for the free demo class from askiitians.
points won -