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Consider the following: (1) If cot theta =x, thenx+ 1+x = sec theta cosec theta (2) If x+1/x = sin theta,thenx^(2) + (1)/(x^(2))=sin ^(2) theta -2 (3) If x= p sec theta and y=q tan theta,thenx ^(2) q^(2) -y^(2) p^(2) =p^(2) q^(2) (4) The maximum valur of (cos theta - sqrt3 sin theta) is 3 which of these are correct ? |
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Answer» `(1), (2) and (3)` |
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