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[" 92.(cosecd-sind) "(sec theta-cos thet...

[" 92.(cosecd-sind) "(sec theta-cos theta)-tan theta+cot theta],[" (g) "" If "x=asec theta+b tan theta" and "y=a tan theta+b sec theta," prove that "x^(2)-y^(2)=a^(2)-b^(2)]

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