Grade 12th passTrigonometry
we have abc triangleangle A +angle B+angle C=180when: 2 sin B=sin A +sin Cprove that : tan(A/2) *tan(C/2)=1/3
we have abc triangle
angle A +angle B+angle C=180
when: 2 sin B=sin A +sin C
prove that : tan(A/2) *tan(C/2)=1/3
