(a) Use the method of to show that I cs.e ae :tn I ,"n 1l

Chapter 7, Problem 144

(choose chapter or problem)

(a) Use the method of to show that I cs.e ae :tn I ,"n 1l * c. J I 2l (b) Use trigonometric identities to derive the formula f I cscqde = lnlcsca-cotol FC J from part (a).

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