sin()
설명
각(라디안)의 사인 계산. 결과는 -1과 1 사이.
문법
sin(rad)
매개변수
- rad: 라디안 각 (float).
반환값
- 각의 사인 값 (double).
예제 코드
void setup() {
Serial.begin(9600);
for (int angle = 0; angle <= 180; angle += 15) {
float angle_rad = angle * M_PI / 180;
float sin_result = sin(angle_rad);
Serial.print("sin(");
Serial.print(angle);
Serial.print("°) = ");
Serial.println(sin_result);
}
}
void loop() {
}
The result in Serial Monitor:
8
Serial.println("Hello World!");
Message (Enter to send message to 'Arduino Uno' on 'COM15')
New Line
9600 baud
sin(0°) = 0.00
sin(15°) = 0.26
sin(30°) = 0.50
sin(45°) = 0.71
sin(60°) = 0.87
sin(75°) = 0.97
sin(90°) = 1.00
sin(105°) = 0.97
sin(120°) = 0.87
sin(135°) = 0.71
sin(150°) = 0.50
sin(165°) = 0.26
sin(180°) = -0.00
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