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प्रश्न
Write the value of `4 tan^2 theta - 4/ cos^2 theta`
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उत्तर
4 `tan^2 theta - 4 / cos^2 theta`
=` 4 tan^2 theta - 4 sec^2 theta`
=`4 (tan^2 theta - sec^2 theta )`
=4(-1)
= -4
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