If cos -105º = -0.26 and csc -105º = -1.03 then , then cos 105º =? and csc 105º =?
We want to use these two identities
cos (x) = cos (-x) and csc (-x) = -csc (x)
So
cos (-105°) = cos (105°) = -0.26
And
csc ( -105°) = -csc (105°) = -1.03 .....so..... - [- csc (105°) ] = csc (105°) = - [ -1.03] = 1.03
Nice job!!!