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Choose the correct answer in each of the following questions:
`"cosec"^(2)57^(@)-tan^(2)33^(@)=?`

A

`0`

B

`1`

C

`-1`

D

`2`

Text Solution

Verified by Experts

The correct Answer is:
B
`"cosec"^(2)57^(@)-tan^(2)33^(@)="cosec"^(2)57^(@)-tan^(2)(90^(@)-57^(@))="cosec"^(2)57^(@)-cot^(2)57^(@)=1.`
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RS AGGARWAL-TRIGONOMETRIC IDENTITIES-Multiple Choice Questions (Mcq)
  1. Choose the correct answer in each of the following questions: sin(45...

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  2. Choose the correct answer in each of the following questions: sec^(2...

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  3. Choose the correct answer in each of the following questions: "cosec...

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  4. Choose the correct answer in each of the following questions: (2tan^...

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  5. Find the value of [(sin^2 2 2^(@)+sin^2 6 8^(@))/(cos^2 2 2^(@)+cos^2 ...

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  6. Without using trigonometric tables , evaluate the following : (co...

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  7. Choose the correct answer in each of the following questions: (cos38...

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  8. If 2sin 2 theta =sqrt(3) " then " theta=?

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  9. Choose the correct answer in each of the following questions: If 2co...

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  10. Choose the correct answer in each of the following questions: If sqr...

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  11. If tanx= 3cotx " then " x=?

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  12. Choose the correct answer in each of the following questions: If x t...

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  13. Choose the correct answer in each of the following questions: If tan^...

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  14. Choose the correct answer in each of the following questions: sec^(2...

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  15. Choose the correct answer in each of the following questions: (cos0^...

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  16. Choose the correct answer in each of the following questions: sin^(2...

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  17. Choose the correct answer in each of the following questions: 3cos^(...

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  18. Choose the correct answer in each of the following questions: cos^(2...

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  19. Choose the correct answer in each of the following questions: If ...

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  20. Choose the correct answer in each of the following questions: If tan...

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