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48. tan (Sin 15-Cos 13). An identity used in the solution 13 5 tanx+tany a. tan(x-y)=; 1-tanxtany 1-tanxtany b. tan(x-y)= c. tan(x-y)= d. tan(x-y)=
48. tan (Sin 15-Cos 13). An identity used in the solution 13 5 tanx+tany a. tan(x-y)=; 1-tanxtany 1-tanxtany b. tan(x-y)= c. tan(x-y)= d. tan(x-y)= tanx + tany tanx-tany 1+tanxtany 1+ tanxtany tanx-tany
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An Introduction To Analysis
Authors: William R. Wade
3rd Edition
0131453335, 978-0131453333
