Question

sin(-Φthita) =.........................................
cos(-Φthita) =...............
tan(-Φthita) =..............

Answer 1

Hi

Sin( - ∅ ) = sin ( 360° - ∅ )

Cos ( - ∅ ) = cos ( 360° - ∅ )

Tan ( - ∅ ) = tan ( 360° - ∅ )

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Answer 2

(-sin thita)
(cos thita)
(-tan thita)