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