Trigonometric Ratios of 180°−θ

Move point P to observe how the point corresponding to θ moves, and how point Q corresponding to 180° − θ moves.[br]Think about how the trigonometric ratios of 180° − θ can be expressed using the trigonometric ratios of θ.[br]You can also move the slider to switch the display mode.
Express sin(180° − θ), cos(180° − θ), and tan(180° − θ) in terms of the trigonometric ratios of θ, and explain why your expressions are correct.
Kapat
– Kenichi Iijima

Bilgi: Trigonometric Ratios of 180°−θ