Question

In a D ABC, if LA = 55° and LB= 75, then
find Lc.​

Answer 1

Answer:

$LA + LB+ LC= {180}^{°} \\ {55}^{°} + {75}^{°} + lc = {180}^{°} \\ {130}^{°} + LC = {180}^{°} \\ LC= {180}^{°} - {130}^{°} \\ LC = {30}^{°}$