1. Tentukan aturan sinus: a) b) 2. Tentukan aturan consinus: a) a=6 b=5 b) b=7 c=6 Tolong bantu kerjain ya. Terimakasih

1. a) a/sin A = b/sin B
        5 cm/sin 30° = b/sin 60°
        5/¹/₂ = b/¹/₂√3
        10 = b/¹/₂√3
        b = 10 . ¹/₂√3
           = 5√3 cm

        C = 180° - (30° + 60°)
            = 180° - 90°
            = 90°

        c/sin C = a/sin A
        c/sin 90° = 5 cm/sin 30°
        c/1 = 5/¹/₂
        c = 10 cm

    b) a/sin A = b/sin B
        a/sin 90° = 6 cm/sin 30°
        a/1 = 6/¹/₂ 
        a = 12 cm

        C = 180° - (30° + 90°)
            = 180° - 120°
            = 60°        
 
        c/sin C = a/sin A
        c/sin 60° = 12 cm/sin 90°
        c/¹/₂ = 12
        c = 6 cm

2. a) a/sin A = b/sin B
        6/sin 30° = 5/sin B
        6/¹/₂ = 5/sin B
        sin B = 5/12
        B = 25°
          
        C = 180° - (30° + 25°)
           = 180° - 55°
           = 125°

        c/sin C = a/sin A
        c/sin 125° = 6/sin 30°
        c/0,85 = 5/¹/₂
        c = 8,5

        b/sin B = c/sin C
        7/sin B = 6/sin 45°
                    = 6/¹/₂√2
                    = 6√2
        sin B = 7/6√2
                 = 0,824
        B = 55°

        A = 180° - (55° + 45°)
           = 180° - 90°
           = 90°

        a/sin A = c/sin C
        a/sin 90° = 6 cm/sin 45°
        a/1 = 6/¹/₂√3 
        a = 4√3