allanablumberg6 allanablumberg6

23-02-2017
Mathematics

contestada

show that point (pi/3,1/2) is on the curve of y=cosx

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ChandrikaP ChandrikaP

23-02-2017

here y=1/2 x=pi/3=60°

y=cosx
1/2=cos60° and cos60°=1/2
so LHS=RHS

so that point is on curve y=cosx

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