Menghitung Radian dan Derajat
TRIGONOMETRI
- Ukuran Sudut
Satuan ukuran sudut yang sering dipakai adalah derajat (...°) dan radian (rad).
*[ derajat (°) =>
radian ( rad) ] 360° = 2
radian 360° = 2atau biasa disebut 2 r
rad a). 1 rad = ..... ° ?
b). 1° = ..... rad ?
Jawab:
a). 360° = 2
rad * 1 rad = .... °
360° = 2
rad 360° = 2 x 22 rad
7
360 = 22 rad
2 7
180 = 22 rad
7
180 x 7 rad
22
1260 = 1 rad
22
57,272°... = 1 rad
57,3° = 1 rad
b). 57,3° = 1 rad
* 1° = .... rad
b). 57,3° = 1 rad
57,3° x 1° = 1 rad
* 1° = .... rad
1° = 1 rad
57,3
1° = 1 rad
1° = 1 rad
57,272...
1° = 0,017 rad
Contoh Soal:
1). 30° = ......
rad 2). 90° = .....
rad 3). 2
rad = ..... ° 3
4). 1
rad = ..... ° 3
Jawab:
1). 30° = ......
rad = 30 x
/180 rad = /6 rad = 1/6 rad 2). 90° = ......
rad = 90 x
/180 rad = /2 rad = 1/2 rad 3). 2
rad = ..... ° 3
= 2 x 180 = 120°
3
4). 1
rad = ..... ° 3
= 1 x 180 = 60°
3
SELESAI...
Semoga Bermanfaat :)
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