if tan(x-y/2),tanz,tan(x+y/2) are in GP. Then prove that cosx=cosy+cos2z
if tan(x-y/2),tanz,tan(x+y/2) are in GP. Then prove that cosx=cosy+cos2z
Get your questions answered by the expert for free
Last Activity: 2 Years ago
Last Activity: 2 Years ago
Last Activity: 2 Years ago
Last Activity: 2 Years ago
Last Activity: 2 Years ago