If `A-B=(3pi)/4` , then show that `(1-tanA)(1+tanB)=2`

If A-B=pi/4 , then prove that: (1+tanA)

If A+B = pi/4 , then prove that (1+tanA ) (1+tanB)=2 .

If A-B=(pi)/(4) , then (1+tanA)(1-tanB)=?

If A+B=pi/4 , prove that: (1+tanA)(1+tanB)=2

If A+B=(pi)/(4), show that (cot A-1)(cot B-1)=2

If A-B = pi/4 , then (1+tanA)(1-tanB)=

If A+B=225^(@) , then (tanA)/(1-tanA).(tanB)/(1-tanB)=?

If A+B=315^@ then (1-tanA)(1-tanB)=

If A+B =45^@ , then the value of 2(1+ tanA)(1+ tanB) is: यदि A+B =45^@ है, तो 2(1+ tanA)(1+ tanB) का मान होगा :