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. If x = 3 sec²0-1, y = tan²0 – 2 then find x - 3y. |
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Answer» x-3y=-4 1. x-3y=3Sec²θ-1-3*(tan²θ-2) x-3y=3Sec²θ-1-3tan²θ-6 x-3y=3*(Sec²θ-tan²θ)-7 x-3y=3*1-7 [Sec²θ-tan²θ=1] x-3y=-4 |
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