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OpenStudy (anonymous):
sin(2arcsin(-1/4)) solve and show steps.
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OpenStudy (anonymous):
let x=arcsin(-1/4)=>sin(x)=-1/4...calculate cos(x)... sin(2arcsin(-1/4))=sin(2x)=2sin(x)cos(x) just plug in
OpenStudy (anonymous):
Thanks!
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