Question

value of sec 255 degree​

Answer 1

Answer:

sec255∘=sec17π12=−(6–√+2–√)

Step-by-step explanation:

sec255∘ =       sec(360∘−105∘)      

=    sec105∘  

=    −(6–√+2–√)

Answer 2

Answer:

-√2

Step-by-step explanation:

Sec 255 = Sec( 2 * 90 + 45 )

              = - Sec 45 (using All Silver Tea Cups)

              = - Sec 45 = - √2