3 years ago

Cos 0° + cos 1° + cos2° +cos3° +...+cos 179° + cos 180°.

Mathematics

1 answer:

sertanlavr [38]3 years ago

4 0

Answer:

Step-by-step explanation:

identity:

cos(180-x) = -cos(x)

cos(0)= -cos(180)

cos(0) + cos(180) = 0

cos(1)= -cos(179)

cos(1)+cos(179) = 0

...

all sum to zero

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