Question

If cot a= 2 + 1. then the value of tan a-cot a=?​

Answer 1

Answer:

cot a = 2 + 1 = 3

tan a = 1/ cot a = 1/3

the value of tan a - cot a

1/3 -3 = 1-9/3 = -8/3

hope this will help you

Answer 2

Answer:

i think your question should be cot a = √2 +1

Step-by-step explanation:

if cot a =√2 +1

then tana =1/ √2+1

on rationalise it you get tan a = √2 -1

so, tana - cot a

= √2 -1 - (√2 +1)

=√2-1-√2-1

=0