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Mathematics 9 Online
OpenStudy (anonymous):

sin(pi/2) cos(pi/7) + cos(pi/2) sin(pi/7)

OpenStudy (anonymous):

if i solve this can i use a calc?

OpenStudy (anonymous):

using identity sinAcosB+cosASinB=sin(A+B) the answer is sin(pi/2+pi/7) sin(9pi/14)=0.035241

OpenStudy (anonymous):

thanks!

OpenStudy (anonymous):

:-)

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