Matematika

Pertanyaan

help me please............
help me please............

1 Jawaban

  • TriGonoMetRi

    sin x - √3 cos x = √2
    k = √((-√3)² + 1²)
    k = √4
    k = 2

    tan a = 1/-√3
    tan a = -1/3 √3
    a = 120° (sin (+) , cos (-))


    sin x - √3 cos x = √2
    k cos (x - a) = √2
    2 cos (x - 120°) = √2
    cos (x - 120°) = √2 /2
    x - 120° = 45° atau x - 120° = 180° - 45°
    x = 165° atau x = 255°

    HP = {165° , 255°}