TRIGONOMETRI
No. 1
180° = π rad
a° = a × π/180° rad
540°
= π × 540°/180°
= 3π rad
•
No. 2
a rad = a × 180°/π
1/2 π rad
= 1/2 π × 180°/π
= 1/2 × 180°
= 90°
No. 3
a² + c² = b²
b = √(a² + c²)
b = √(8² + 6²)
b = 10 cm
sudut A
sisi depan sudut = a
sisi samping sudut = c
sisi miring = b
sin A = a/b = 8/10 = 4/5
cos A = c/b = 6/10 = 3/5
tan A = a/c = 8/6 = 4/3
cosec A = b/a = 10/8 = 5/4
sec A = b/c = 10/6 = 5/3
cotan A = c/a = 6/8 = 3/4
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TRIGONOMETRI
No. 1
180° = π rad
a° = a × π/180° rad
540°
= π × 540°/180°
= 3π rad
•
No. 2
a rad = a × 180°/π
1/2 π rad
= 1/2 π × 180°/π
= 1/2 × 180°
= 90°
•
No. 3
a² + c² = b²
b = √(a² + c²)
b = √(8² + 6²)
b = 10 cm
sudut A
sisi depan sudut = a
sisi samping sudut = c
sisi miring = b
sin A = a/b = 8/10 = 4/5
cos A = c/b = 6/10 = 3/5
tan A = a/c = 8/6 = 4/3
cosec A = b/a = 10/8 = 5/4
sec A = b/c = 10/6 = 5/3
cotan A = c/a = 6/8 = 3/4