Question

what is the value of cos oº. cos 1º. cos 2. cos 3°... cos 89° cos 90° is
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Answer 1

28 is the answer cos 20 is this songs

Answer 2

Answer:

we know that cos90° = 0

cos0°.cos1°.cos2°. .......... cos89°.cos90°

=> (cos0°.cos1°.cos2°. .......... cos89°) 0

=> 0