in any triangle ABC, which is not right angled `Sigma cosA.cosecB.cosecC` is equal to

In a triangle ABC,right angled at B, then

If in a triangle ABC, 2cosA=sinBcosecC , then

If in a triangle ABC, 2cosA=sinBcosecC , then

If a circle is inscribed in right angled triangle ABC with right angle at B, show that the diameter of the circle is equal to AB+BC-AC.

If a circle is inscribed in right angled triangle ABC with right angle at B, show that the diameter of the circle is equal to AB+BC-AC.

In triangle ABC, right angled at C, (tanA+tanB) equal to

If in a triangle ABC, 2cosA=sinBcosecC , then :

In a right angled triangle ABC, the bisector of the right angle C divides AB into segment x and y and tan((A-B)/(2))=t, then x:y is equal to