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Mathematics, 21.06.2019 22:00
Which sum or difference identity would you use to verify that cos (180° - q) = -cos q? a.) sin (a -b) = sin a cos b – cos a sin b b.) cos (a -b) = cos a cos b – sin a sin b c.) cos (a -b) = cos a cosb + sin a sin b d.) sin (a + b) = sin a cos b + cos a sin b
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Mathematics, 22.06.2019 02:30
How many and of which kind of roots does the equation f(x)=x3−x2−x+1
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What equals 42 & 50 in multiplication so !...
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