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MHT CET2018MathematicsTrigonometric Ratios & Identities

cos 1 o . cos 2 o . cos 3 o … . cos 179 o =

Options

  1. A0
  2. B1
  3. C- 1 2
  4. D- 1

Correct answer

A. 0

Step-by-step solution

cos o 1 o cos 2 o cos 3 o .... cos 90 o .... cos 179 o = cos 1 o cos 2 o cos 3 o .....0..... cos 179 o ( ∵ cos 9 0 o = 0 ) = 0

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