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Write the value of ` 4 tan^(2)theta-(4)/(cos^(2)theta).`

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Write the value of ` 4 tan^(2)theta-(4)/(cos^(2)theta).`
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Correct Answer - -4
Given expression `=4tan^(2)theta-4sec^(2)theta=4tan^(2)theta-4(1+tan^(2)theta)= -4.`
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