Question

if tanx=3.5 then tan(-x)=

Answer 1

do you know your negative angle identities?

Answer 2

no!!

Answer 3

what do you think it is

Answer 4

do cos 45 then cos-45. then do tan 45 then tan -45 and think about whats happening

Answer 5

it stays the same?

Answer 6

not for tangent.

Answer 7

positive angles: - anticlockwise
negative angles :- clockwise

Answer 8

it becomes negative?

Answer 9

cos will stay positive in q1 and 4. but what about tangent. when is it positive and negative

Answer 10

it does, but do you understand why?

Answer 11

yes.. tangent is only positive in the 3rd quadrant