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OpenStudy (anonymous):
prove csc(A-B)=sin(A+B)/sin^2A-sin^2B
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OpenStudy (anonymous):
please help i tried starting on the left but all i got was 1/sin(A-B) and then it goes to 1/sinAcosB-cosAsinB
Directrix (directrix):
Grouping symbols would be helpful for me because I am unsure of what portion of the problem appears in the denominator. Which of these, if either, is the statement to be proved? @1clarissa |dw:1446103721635:dw|
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