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Question 7 - sin 90 - θ, cos 90 - θ formula - Chapter 8 Class 10 Introduction to Trignometry

Last updated at May 29, 2023 by

Ex 8.3, 7 - Express sin 67 + cos 75 in terms of 0 and 45 - Ex 8.3

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Question 7 Express sin 67 + cos 75 in terms of trigonometric ratios of angles between 0 and 45 . sin 67 + cos 75 = sin (90 23) + cos (90 15) = cos 23 + sin 15 Hence required value is cos 23 + sin 15

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