SOLUTION: Show {{{(1-3sin(X)-4sin^2(X))/(cos^2(X))=(1-4sin(X))/(1-sin(X))}}}

Algebra ->  Proofs -> SOLUTION: Show {{{(1-3sin(X)-4sin^2(X))/(cos^2(X))=(1-4sin(X))/(1-sin(X))}}}      Log On


   

Question 1092548: Show
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
good job of posting, but, do you have a question?
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I missed the word "Show"
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Show
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Cancel 4sin(x) - 1
%28sin%28x%29+%2B+1%29%2F%28cos%5E2%28X%29%29=+1%2F%281-sin%28X%29%29
Cross multiply
cos^2(x) = 1 - sin^2(x)
QED
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You might get whining about working one side only, but I'm still waiting for an example where that affects the outcome.