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riadik2000 [5.3K]
3 years ago
7

What is cos(360°+x) equal to​

Mathematics
2 answers:
trapecia [35]3 years ago
7 0

Answer:

1

Step-by-step explanation:

We know the value of cos 360° is always equal to 1.

sveticcg [70]3 years ago
3 0

Answer:

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

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