Home
Class 10
MATHS
If 0^(@) le A le 90^(@), find A, if ...

If
`0^(@) le A le 90^(@),`
find A, if :
`(cos A)/ (1 - sin A) + (cos A)/ (1 + sin A) = 4`

Text Solution

AI Generated Solution

Promotional Banner

Topper's Solved these Questions

  • TRIGONOMETRICAL IDENTITIES

    ICSE|Exercise QUESTIONS|22 Videos

  • TRIGONOMETRICAL IDENTITIES

    ICSE|Exercise EXERCISE 21 (D)|22 Videos

  • TANGENTS AND INTERSECTING CHORDS

    ICSE|Exercise EXERCISE 18 (C)|42 Videos

Similar Questions

Explore conceptually related problems

If 0^(@) le A le 90^(@), find A, if : (sin A)/ (sec A - 1) + (sin A)/ (sec A + 1) = 2

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

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

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

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

Find A, if 0^(@) le A le 90^(@) and : 2 cos^(2) A - 1 = 0

Find A, if 0^(@) le A le 90^(@) and : cos^(2) A - cos A = 0

Find A, if 0^(@) le A le 90^(@) and : sin 3 A - 1 = 0

Find A, if 0^(@) le A le 90^(@) and : 2 cos^(2) A + cos A - 1 = 0

If 4 cos ^(2) A -3 =0 and 0^(@) le A le 90 ^(@) find : cos 3A

ICSE-TRIGONOMETRICAL IDENTITIES-EXERCISE 21 (E)
  1. Prove that : (cos A)/(1 + sin A) = sec A - tan A

    Text Solution

    |

  2. Prove that : cos A (1 + cot A) + sin A (1 + tan A) = sec A + cosec A

    Text Solution

    |

  3. Prove that : (sin A - cos A) (1 + tan A + cot A) = (sec A)/ (cosec^(...

    Text Solution

    |

  4. Prove that : sqrt (sec^(2) A + cosec^(2) A) = tan A + cot A

    Text Solution

    |

  5. Prove that : (sin A + cos A) (sec A + cosec A) = 2 + sec A cosec A

    Text Solution

    |

  6. Prove that : (tan A + cot A) (cosec A - sin A) (sec A - cos A) = 1

    Text Solution

    |

  7. Prove that : cot^(2) A - cot^(2) B = (cos^(2) A - cos^(2) B)/ (sin^(...

    Text Solution

    |

  8. Prove that : (cot A - 1)/ (2 - sec^(2) A) = (cot A)/ (1 + tan A)

    Text Solution

    |

  9. If 4 cos^(2) A - 3 = 0 and 0^(@) le A le 90^(@), then prove that :...

    Text Solution

    |

  10. If 4 cos^(2) A - 3 = 0, show that : cos 3 A = 4 cos^(3) A - 3 co...

    Text Solution

    |

  11. Find A, if 0^(@) le A le 90^(@) and : 2 cos^(2) A - 1 = 0

    Text Solution

    |

  12. Find A, if 0^(@) le A le 90^(@) and : sin 3 A - 1 = 0

    Text Solution

    |

  13. Find A, if 0^(@) le A le 90^(@) and : 4 sin^(2) A - 3 = 0

    Text Solution

    |

  14. Find A, if 0^(@) le A le 90^(@) and : cos^(2) A - cos A = 0

    Text Solution

    |

  15. Find A, if 0^(@) le A le 90^(@) and : 2 cos^(2) A + cos A - 1 = ...

    Text Solution

    |

  16. If 0^(@) le A le 90^(@), find A, if : (cos A)/ (1 - sin A) + (co...

    Text Solution

    |

  17. If 0^(@) le A le 90^(@), find A, if : (sin A)/ (sec A - 1) + (si...

    Text Solution

    |

  18. Prove that : (cosec A - sin A) (sec A - cos A) sec^(2) A = tan A

    Text Solution

    |

  19. Prove the identity ("sin"theta+"cos"theta)("tan"theta+"cot"theta)="s...

    Text Solution

    |

  20. Evaluate without using triignometric tables,** "sin"^(2)28^(@)+"sin...

    Text Solution

    |