Grade 11TrigonometryIN A TRIANGLE ABC PROVE THAT SIN (B-C)/2 = (b-c)/2 COS A/2 ? RIYAZSHAIK 10 Years agoGrade 11
Sourabh Singh10 Years agoTqake cos to the left hand side and expand the numerator and denomination . You will ge the answer and it will be equal to he rhs.