Question

Sin 3x = -1/2 √2
0°≤ x ≤ 360°
tentukan hp nya...

Answer 1

Verified answer

Jawab

sin 3x = - 1/2 √2  = sin (-45)

3x = - 45 + k. 360  atau 3x = (180+45) + k. 360
x = -15 + k. 120  atau x = 75 + k. 120
k = 0, x = -15, x = 75
k = 1 , x =  105 , x = 195
k = 2 , x = 225,  x = 315
k = 3 , x = 345, x  = 435
 untuk 0 ≤ x ≤  360  → HP x = (75, 105, 195. 225, 315, 345)