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OpenStudy (anonymous):
can anyone help me prove sin2x cscx = 2cosx?
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OpenStudy (anonymous):
sin2x = 2sinxcosx, and cscx =1/sinx, so.. 2sinxcosx*1/sinx
OpenStudy (anonymous):
canceling sinx gives.... 2cosx=2cosx
OpenStudy (anonymous):
omg thank you soo much ive been stuck on this for so long
OpenStudy (anonymous):
glad to help :)
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