The value of 5tan??-5sec?? is:
a) 30
b)-5
c)-1
d)5
(? =theta)

Dear student
I think there is tan square theta and sec square theta ,i am solving accordingly.
5 ( tan ^2 theta - sec^2 theta)
= - 5 ( sec^2 theta - tan^2 theta) = -5 (1) = - 5
regards.