`A+B=135^@ =>(1+cot A)(1+cot B)=`

A+B=135^(@)rArr(1+cot A)(1+cot B)=

A+B=135^(@)rArr(1+cot A)(1+cot B)=

A+B=225^(@)rArr((1+cot A)(1+cot B))/(cot A cot B)=

If, in a Delta ABC , angle C is 45^(@) then : (1 + cot A) (1 + cot B) =

If A+B=135^(@) " then " (1+ cot A ) (1+cot B)=

Suppose that A+B =135^(@) and neither A nor B is an intergral multiple of 180^(@) . Then prove that (1 + cot A)(1 + cot B) = 2 and hence deduce that cot67(1^(@))/(2) = sqrt(2)- 1 .

If A+B=225^(@) Find cot A/(1+cot A)^(*)cot B(1+cot B)'

If A+B=45^(@), then (cot A-1)(cot B-1) is equal to

(tan A + tan B)/( cot A + cot B)+(1- tan A tan B)/( 1- cot A cot B)=