Evaluate 
Let I = 
⇒ I = 
[
]
⇒ I = log |cosec π/4 – cot π/4| - log |cosec π/6 – cot π/6|
⇒ I = log |√2 – 1| - log |2 - √3|
∴ 
= 
8
Evaluate
Let I =
⇒ I =
[]
⇒ I = log |cosec π/4 – cot π/4| - log |cosec π/6 – cot π/6|
⇒ I = log |√2 – 1| - log |2 - √3|
∴ =