Question

If cotA-tanB=0 then show that cotA×cotB=1

Answer 1

Proved when we put the value of cot A and cot B

Answer 2

Answer:

cotA*cotB=1

Step-by-step explanation:

cotA-tanB=0

or,  cotA=tanB

or, cotA=1/cotB

or, cotA*cotB=1 (thus proved)