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posted by Kate on Friday, July 15, 2011 at 4:47pm.
Determine the exact value of: sin30° + cos225° + sin150° + cos330°
sin30° + cos225° + sin150° + cos330° = sin30° + (-cos45°) + sin30° + cos30° = 1/2 - 1/√2 + 1/2 + √3/2 = 1 - 1/√2 + √3/2
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