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19. cocec 240°20. sec31531. Cot23022. Cos225 |
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Answer» Answer: 19. -2/√3 20√2 31.0 22-1/√2 Explanation: cosec240= COSEC(180+60)=-cosec60. sec315= SEC(360-45)= sec45 cot230=cot(180+45)=cot45 cos225=cos(180+45)=-COS45.... solve the rest. Hope U got it. |
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