Page 26 - modul trigonometri bilingual

sin (180° + ) = -sin
cos (180° + ) = -cos
tan (180° + ) = tan
csc (180° + ) = -csc
sec (180° + ) = -sec
cot (180° + ) = cot
e. Angular relationship with angle ( ° − )
Note ∆ and ∆ ′ ′ in the

picture on the side to determine angular P(p,q)

trigonometry comparison and (270° − 270° − r

).
O Q
Relationship of angle to angle: (270° −

) r

without -cos (270° −
) =
P’’(-q,-p) Q’
cos -sin (270° − ) =
so cot (270° − ) =
csc -sec (270° − ) =
sec -csc (270° − ) =
cot tan (270° − ) =

f. Angular relationship with angle ( ° + )
P(p,q)
Note ∆ and ∆ ′ ′ in the image on the side to determine the
r
270° +
ratio of angular trigonometry and (270° + ).

Relationship of angle to angle: (270° + ) O Q’ Q

without -cos (270° +
r
) =
cos without (270° +
) =
P’(q,-p)
tan -cot (270° + ) =
csc -sec (270° + ) =
sec csc (270° + ) =
cot -tan (270° + ) =
g. Angular relationship with angle ( ° − )
Pay attention and on the image on the side to determine the ratio of

angle and.∆ ∆ ′ ′ (360° − )

Relationship of angle to angle: (360° − )

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