[" (i) "(cos(A+B+C)+cos(-A+B+C)+cos(A-B+C)+cos(A+B-C))/(sin(A+B+C)+sin(-A+B+C)+sin(A-B+C)-sin(A+B-C))],[=cot C]

Prove that: (cos(A+B+C)+cos(-A+B+C)+cos(A-B+C)+"cos"(A+B-C))/(sin(A+B+C)+sin(-A+B+C)+sin(A-B+C)-"sin"(A+B-C))=cot C

Prove that: (cos(A+B+C)+cos(-A+B+C)+cos(A-B+C)+cos(A+B-C))/(sin(A+B+C)+sin(-A+B+C)+sin(A-B+C)-sin(A+B-C))=

(cos(-A+B+C)+cos(A-B+C)+cos(A+B-C)+cos(A+B+C))/(sin(-A+B+C)-sin(A-B+C)+sin(A+B-C)+sin(A+B+C))=cot B

cot A+cot B+cot C+(cos(A+B+C))/(sin A sin B sin C)=

Prove that cos (A + B) cos C - cos (B + C) cos A = sin B sin (C - A)

What is the value of cos(90 -B)sin (C-A) + sin(90 + A) cos(B+ C)- sin (90 - C) cos (A + B) ? cos(90 -B)sin (C-A) + sin(90 + A) cos(B+ C)- sin (90 - C) cos (A + B) का मान क्या है?

If A,B,C are the angles of a triangle, show that, (iii) (cos A cos C + cos (A + B) cos(B + C))/(cos A sin C - sin (A + B) cos (B + C)) = cot C .

What is the value of sin (B - C) cos (A- D) + sin (A-B) cos (C -D) + sin (C- A) cos (B - D) ? sin (B - C) cos (A- D) + sin (A-B) cos (C -D) + sin (C- A) cos (B - D) का मान क्या है?

(cos A)/(sin B sin C)+(cos B)/(sin C sin A)+(cos C)/(sin A sin B)=2