If A,B and C are interior angles of triangle ABC then show that sin((B+C)/2)=cosA/2. 10 | Unsolved Papers (...

If A,B and C are interior angles of a triangle ABC, then show that sin((B+C)/(2))=cos(A)/(2)

if A, B and C are interior angles of a triangle ABC, then show that cos((B+C)/2) = sin (A/2)

If A,B and C are the interior angles of triangle ABC, find tan((B+C)/(2))

If A,B and C are the interior angles of a triangle ABC, then show that cot((A+B-C)/(2))=tan C

If A,B and C are the interior angles of a triangle ABC, then show that cot((A+B-C)/(2))=tan C

(i) A,B and C are interior angles of a triangle ABC.Show that sin((B+C)/(2))=cos((A)/(2)) . (ii) If angleA=90^(@) , then find the value of tan((B+C)/(2)) .

If A,B,C are the interior angles of a triangle ABC, prove that (tan(B+C))/(2)=(cot A)/(2)

If A,B,C are the interior angles of a triangle ABC, prove that tan((C+A)/(2))=(cot B)/(2)( ii) sin((B+C)/(2))=(cos A)/(2)

If A,B,C are interior angles of /_ABC, show that : : cos ec^(2)((B+C)/(2))-tan^(2)((A)/(2))=1