CBSE Class 11-science Answered
<div> prove : a CosA +bCos B+ c COSC = 2a Sin B Sin C </div>
Asked by Kunmunsahoo.2012 | 25 Mar, 2015, 01:41: PM

Answered by Vimala Ramamurthy | 26 Mar, 2015, 09:48: AM