If A-B=3pi/4 then show that (1-tan A) (1-tan B)=2 - Maths - Trigonometric Functions

Question

If A-B=3pi/4 then show that (1-tan A) (1-tan B)=2

Pooja Khanna · Accepted Answer

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https://www meritnation
com/ask-answer/question/if-a-b-pi-4-prove-that-cot-a-1-cot-b-1-2/trigonometric-functions/1778975

If A-B=3pi/4 then show that (1-tan A) (1-tan B)=2.