If ABC are angle of a triangle then prove that `cot Acot B+ cot Bcot C+cotCcostA=1`

Prove that: cot2Acot3A-cot3Acot5A-cot5Acot2A=1

Prove that: cot2Acot3A-cot3Acot5A-cot5Acot2A=1

If A,B ,C are the angle of Delta ABC then cot A .cot B + cot B . "" cot C + cot C.cot A =

If A,B ,C are the angle of Delta ABC then cot A .cot B + cot B . "" cot C + cot C.cot A = ............... A) 0 B) 1 C) 2 D) -1

In an acute angled triangle, cot B cot C + cot A cot C + cot A cot B

In an acute angled triangle, cot B cot C + cot A cot C + cot A cot B

In a triangle ABC,if a cot A+b cot B+c cot C=

In an acute angled triangle ABC, cot A cot B + cot C + cot c Cot A = …..

In triangle ABC prove that tan((A+B)/2)=cot. C/2

In any triangle ABC prove that cot(A/2)+cot(B/2)+cot(C/2)=cot(A/2)cot(B/2)cot(C/2)