ntsoakimatabane58 ntsoakimatabane58

18-05-2021
Mathematics

contestada

what is cos(360°+x) equal to

Respuesta :

angelapatriciapiedra angelapatriciapiedra

18-05-2021

Answer:

1

Step-by-step explanation:

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

Answer Link

Trancescient Trancescient

18-05-2021

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

Answer Link

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