if m^2 + m'^2 + 2mm'cosA = 1 ,

n^2 + n'^2 + 2nn'cosA = 1 ,

and , mn + m'n' + (mn' + m'n)cosA = 0

THEN WHAT IS m^2 + n^2 ????

please explain and show the steps

sanatan sharma , 14 Years ago

Grade 10