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State weather each of the following stat...

State weather each of the following statements is true or false :
The value of `cos^(2)23^(@)-sin^(2)67^(@)` is positive.

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KUMAR PRAKASHAN-INTRODUCTION TO TRIGONOMETRY-Objective Questions
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  2. Answer each question by selecting the proper alternative from those gi...

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  3. Answer each question by selecting the proper alternative from those gi...

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  4. Answer each question by selecting the proper alternative from those gi...

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  5. Answer each question by selecting the proper alternative from those gi...

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  6. Answer each question by selecting the proper alternative from those gi...

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  7. Answer each question by selecting the proper alternative from those gi...

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  8. Answer each question by selecting the proper alternative from those gi...

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  9. Answer each question by selecting the proper alternative from those gi...

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  10. Answer each question by selecting the proper alternative from those gi...

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  11. Answer the following by a number or a word or a sentence : If sinA=1...

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  12. Answer the following by a number or a word or a sentence : What is t...

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  13. Answer the following by a number or a word or a sentence : If 4tanth...

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  14. Answer the following by a number or a word or a sentence : What is t...

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  15. If tan7theta=cot(5theta-30^(@)), both angles being acute angles, find ...

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  16. State weather each of the following statements is true or false : Th...

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  17. State weather each of the following statements is true or false : sq...

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  18. State weather each of the following statements is true or false : (t...

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  19. State weather each of the following statements is true or false : Th...

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  20. State weather each of the following statements is true or false : (t...

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