A brief run-down on angles on cartesian plane. Listing the positive trigonometry value in each quadrant. Also includes the meaning of coterminal angles and examples. Elaborated slightly on reference angles (basic angles) on how to identify them based on the quadrant. 6 questions on determining valu...
Quadra
* degree start from 0° I
& spin anticlockwise tan (t)
* if angle is negative ↳,
then spin clockwise
Coterminal angles
→ angles that lies on the same
position on Cartesian plane
y
y y
145° 1 405° y n 7650 y n
>n @
459 4050, & 765° are coterminal angles
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