Page 41 - Revisi RPP PERBANDINGAN TRIGONOMETRI_MGMP MTK Kota Palu
P. 41
Kecepatan = 42 = 2.1 putaran/menit = 2.1 × 2 rad/menit = 4.2 rad/menit 1
20
4.2 rad/menit = 4.2π = 0.07 rad detik
60
tan 45° = ℎ − 1 L2
ℎ
16 − 1,5
3. tan 45° = ℎ 1
jarak anak dengan pohon = 16 − 1,5 = 14,5 = 14.5 m 1
45° 1
− 3 3 L1
(
(
a. sin 90°−α) − cos 180°−α) = cos α) − α) ) = 2cos α = cos α = 13 =− 2 13
(
(
(
(
tan 270°+α) + cot −α) α ( ) + α) ) −2cot α −cot α 3 13
(
2
4. 3 − 3
b. (90°+α) +(180°+α) = α − sin α = 2 13 = 3 13−4
(
sin 270°−α) − cot (180°−α) −cos α −cot α 3 + 3 6 +3 13
13 2
3
3 L1
a. tan 330° = tan (−30°) = − 1 3 = − 1 3 3 =− 2
3
5. cot 135°sin 240° cot (90°+45°) sin (180°+60°) (−1)(− 1 3) 1 3 3
2 2
