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हल करें (i) ` 2sin^(2)+sinx=3(0^(@) lex le 1000^(@))` (ii) `2 cos^(2)x-cosx=3,(theta lex le 1000^(@))` `(iii) 2sin^(2)x+sin^(2)x=2` (iv) `2 cos^(2)x+3sinx=0` |
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Answer» Correct Answer - `(i) 180^(@),540^(@),900^(@) " " (ii) 90^(@),450^(@),810^(@)` (ii) `(2n+1)(pi)/(2),npi +-(pi)/(2)n in I " " (iv) x-npi+(-1)^(n)(7pi)/(6)n, in Z` |
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