CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon


Question

Mark the correct alternative in each of the following :

In any ΔABC, a2(sin Bsin C)=


  1. a2+b2+c2

  2. a2

  3. b2

  4. 0


Solution

The correct option is D

0


Let a2 sinB=b2 sin A, b2 sin C=c2 sin Aa2 sin C=c2 sin Aa2 (sin Bsin C)=a2 (sin Bsin C)+b2 (sin Csin A)+c2 (sin Asin B)=a2 sin Ba2 sin C+b2 sin Cb2 sin A+c2 sin Ac2 sin B=b2 sin Aa2 sin C+b2 sin Cb2 sin A+a2 sin Cb2 sin C=0

flag
 Suggest corrections
thumbs-up
 
0 Upvotes


Similar questions
View More


Same exercise questions
View More


People also searched for
View More



footer-image