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Mathematics
Destiney Harvey
6 September, 13:51
Sin70cos10-cos70sin10
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Briana Donovan
6 September, 17:28
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We know that sin (a-b) = sina. cosb - cosa. sinb
if a=70 & b=10 the sin (70-10) = sin (60) = √3/2
Sin70cos10-cos70sin10 = sin60 = √3/2
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