Question

7. Express sin 67* + cos 75° in terms of trigonometrie ratios of angles between 0 and 45
86 Trigonometric Identities
You may recall that an equat​

Answer 1

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sin 67° + cos 75°

= sin (90° - 23°) + cos (90° - 15°)

= cos 23° + sin 15°

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Answer 2

$\sin(67) + \cos(75) \\ = \sin(90 - 23) + \cos(90 - 15) \\ = \cos(23) + \sin(15)$