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19. cocec 240°20. sec31531. Cot23022. Cos225​

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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