Manish Lakra
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The value of cos 25° 35′ cos34° 25′ – sin 25° 34′ sin 34°’ 25′ is 

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27.14%1 ( 19 voters )
24.29%2 ( 17 voters )
24.29%Zero ( 17 voters )
24.29%None of these ( 17 voters )
Based On 70 Votes

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1 Answer

  1. Choice (d) is correct.
    cos 25° 35′ cos 34° 25′ – sin25° 35′ sin 34°’ 25′ = cos(25° 35′ + 34° 25′) = cos 60° = 1/2
    This question related to Chapter 3 maths Class 11th NCERT. From the Chapter 3: Trigonometric Functions. Give answer according to your understanding.

    For more please visit here:
    https://www.tiwariacademy.com/ncert-solutions/class-11/maths/#chapter-3

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