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(sin3t+cos3t)/(cos3t-sin3t)=? Please help

(sin3t+cos3t)/(cos3t-sin3t)=? Please help
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(sin3t+cos3t)/(cos3t-sin3t)=? Please help

User Fahad Hasan
by
8.1k points

1 Answer

5 votes
Hello,

Let's assume 3t=a.


(sin(a)+cos(a))/(cos(a)-sin(a)) = ((cos(a)+sin(a))^2)/(cos^2(a)-sin^2(a))\\\\ = (1+2sin(a)cos(a))/(cos(2a))= (1+sin(2a))/(cos(2a)) with\ a=3t
User Mike Walton
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