sorabkhosla
sorabkhosla
09-05-2017
Mathematics
contestada
Sin70cos10-cos70sin10
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mreijepatmat
mreijepatmat
10-05-2017
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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