Question

Kuis:
Nilai sin (x) =

(A) sin (π + x)
(B) sin (π - x)
(C) sin (2π - x)
(D) sin (2π + x)
(E) sin (³/₂ π - x)

Answer 1

Trigonometri

(A) sin (π + x) → kuadran III

sin (π + x) = - sin x

(B) sin (π - x) → kuadran II

sin (π - x) = sin x

(C) sin (2π - x) → Kuadran IV

sin (2π - x) = - sin x

(D) sin (2π + x) → kuadran I

sin (2π + x) = sin x

(E) sin (³/₂ π - x) → kuadran III

sin (3/2 π - x) = - cos x