Syntax
cos(radians)
Description
The cos() function returns the cosine of radians. The output range for the cos() function is -1 ≤ cos() ≤ 1.
Example
print("Cosine Waveform: \n\n")
print(" -1 -0.5 0 0.5 1\n")
print(" +----+----+----+----+\n")
i=0.0
while (i <= 3.2) {
printf("%4.2f ", i)
cosine=cos(i)
plot=int(10 * cosine) + 10
if (plot < 10) {
before=""
j=1
while (j <= plot) {
before= before + " "
j++
}
after=""
j = plot
while (j < 9) {
after=after + " "
j++
}
print(before, "*", after, "|")
printf(" cosine = %+8.6f\n", cosine)
} else {
if (plot == 10) {
print(" *")
printf(" cosine = %+8.6f\n", cosine)
} else {
print(" |")
before=""
j=11
while (j < plot) {
before=before + " "
j++
}
print(before, "*")
after=""
j=plot+1
while (j <= 24) {
after=after + " "
j++
}
print(after)
printf("cosine = %+8.6f\n", cosine)
}
}
i =i + 0.1
}