Question

The value of cos 1° cos 2° cos 3° ...... cos 179° is ??​

Answer 1

Answer:

Since cos 90° = 0, we have

cos 1° cos 2° cos 3° …cos 90°… cos 179° = 0

Step-by-step explanation:

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Answer 2

Answer:

cos 55°

Step-by-step explanation:

as cos 179°=sin1°

and cos1°*sin1°=1

in similar way only cos55° remains

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