Please help me to solve this problem
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Answer:
cos 23° + sin 15°
Step-by-step explanation:
Need to know (or work out again from a graph):
- sin x = cos (90° - x)
- cos x = sin (90° - x)
So...
sin 67° + cos 75°
= cos (90° - 67°) + sin (90° - 75°)
= cos 23° + sin 15°
Anonymous:
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