Question

Cos1.cos2.cos3......cos30 =0

Answer 1

Answer:

False

Step-by-step explanation:

All value are positive but

$\Pi_{1}^ {30} \cos(i) \to \: 0$

Answer 2

Step-by-step explanation:

when we try to dolve we can find

cos 1 +cos 29 = cos 30

cos 2 + cos 28 = cos 30

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cos 15 + cos 15 = cos 30

here we found 16 cos 30

then the last answer is

root 3 / 2

when we divide then we found

which approximately 0

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