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If sin3A=1 and 0 le A le 90^(@), find : ...

If `sin3A=1 and 0 le A le 90^(@)`, find :
`tan^(2)A-1/(cos^(2)A)`

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The correct Answer is:
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ICSE-TRIGONOMETRICAL RATIOS OF STANDARD ANGLES-EXERCISE 23(C)
  1. If sin3A=1 and 0 le A le 90^(@), find : sin A

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  2. If sin3A=1 and 0 le A le 90^(@), find : cos 2A

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  3. If sin3A=1 and 0 le A le 90^(@), find : tan^(2)A-1/(cos^(2)A)

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  4. If 2cos2A=sqrt(3) and A is acute, find : A

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  5. If 2cos2A=sqrt(3) and A is acute, find : sin 3A

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  6. If 2cos2A=sqrt(3) and A is acute, find : sin^(2)(75^(@)-A)+cos^(2)(4...

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  7. If sinx+cosy=1" and "x=30^(@), find the value of y.

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  8. If 3tanA-5cosB=sqrt(3) and B=90^(@), find the value of A.

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  9. From the given figure, find : cosx^(@)

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  10. From the given figure, find : x^(@)

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  11. From the given figure, find : 1/(tan^(2)x^(@))-1/(sin^(2)x^(@))

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  12. From the given figure, find : Use tanx^(@), to find the value of ...

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  13. Use the given figure to find : tantheta^(@)

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  14. Use the given figure to find : theta^(@)

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  15. Use the given figure to find : sin^(2)theta^(@)-cos^(2)theta^(@)

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  16. Use the given figure to find : Use sintheta^(@) to find the value...

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  17. Find the magnitude of angle A, if : 2sinAcosA-cosA-2sinA+1=0

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  18. Find the magnitude of angle A, if : tanA-2cosAtanA+2cosA-1=0

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  19. Find the magnitude of angle A, if : 2cos^(2)A-3cosA+1=0

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  20. Find the magnitude of angle A, if : 2tan3Acos3A-tan3A+1=2cos3A

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