lex3340
18.05.2021 •
Mathematics
What is cos(360°+x) equal to
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Ответ:
1
Step-by-step explanation:
We know the value of cos 360° is always equal to 1.
Ответ:
cos(360 + x) = cos x
Proof:
cosine identity:
cos(x + y) = cosxcosy - sinxsiny
or
cos(360 + x) = cos360cox - sin360sinx
but
cos360 = 1 and sin360 = 0
Therefore,
cos(360 + x) = cos x
Ответ: