Question

prove (1+ tangent cube theta/ 1+tangent theta) + tangent theta - secant square theta = 0

Answer 1

(1+tan³teta/1+tan teta)+tan teta-tan²teta-1

as sec²teta=tan²teta+1

take LCM and solve the you get

1+tan³teta+tan teta+tan²teta-tan²teta-tan³teta-1 /1+tan teta

=0/1+tan teta

=0