tan(-theta)/sin(540+ theta)
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23
sin(540+x) = - sinx
therefore
-tanx ÷ sin(540+x) becomes 1/cosx
answer is 1/cosx
therefore
-tanx ÷ sin(540+x) becomes 1/cosx
answer is 1/cosx
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sin(540+x)=sinx
Therefore -tanx/sin(540+x)=1/cosx
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