The value of cos 10 ° cos 30° cos 50° cos 70° cos 90° is:
Answer & explanation
Correct answer: option 2
cos 10 ° cos 30° cos 50° cos 70° cos 90°
{ we know, cos 90° = 0 }
= cos 10° × cos 30° × cos 50° × cos 70° × 0
= 0
The value of cos 10 ° cos 30° cos 50° cos 70° cos 90° is:
Correct answer: option 2
cos 10 ° cos 30° cos 50° cos 70° cos 90°
{ we know, cos 90° = 0 }
= cos 10° × cos 30° × cos 50° × cos 70° × 0
= 0