Home
Class 9
MATHS
Evaluate : (i) cosec 82^(@)-sec8^(@) (ii...

Evaluate : (i) `cosec 82^(@)-sec8^(@)` (ii) `sec 70^(@)sin 20^(@)+cos 20^(@)cosec 70^(@)`

Text Solution

Verified by Experts

The correct Answer is:
2
Promotional Banner

Topper's Solved these Questions

  • COMPLEMENTARY ANGLES

    ICSE|Exercise EXERCISE |64 Videos

  • CO-ORDINATE GEOMETRY

    ICSE|Exercise QUESTIONS|12 Videos

  • COMPOUND INTEREST

    ICSE|Exercise TOPIC 2 (4 Marks Questions)|12 Videos

Similar Questions

Explore conceptually related problems

Evaluate: (sec 75^(@))/(cosec 15^(@))

Evaluate : cosec(65^(@)+A)-sec(25^(@)-A)

Evaluate : cosec(65^(@)+A)-sec(25^(@)-A)

Prove that: (i) cos55^(@)sin 35^(@)+sin 55^(@)cos 35^(@)=1 (ii) (tan 72^(@))/(cot 18^(@))-(cot 72^(@))/(tan18^(@))=0 (iii) sec70^(@)sin 20^(@)+cosec 70^(@)cos 20^(@)=2

Evaluate : 3 cos 80^(@)cosec 10^(@)+2sin 59^(@)sec 31^(@)

Evaluate : (i) tan42^(@)-cot48^(@) (ii) sec36^(@)-"cosec"54^(@)

Evaluate: sec^(2)18^(@)-cosec^(2)72^(@)

Evaluate : (i) 3 cos 80^(@) "cosec 10"^(@) + 2 sin 59^(@) sec 31^(@) (ii) (cos 70^(@))/(sin 20^(@)) + (cos 59^(@))/(sin 31^(@)) - 8 sin^(2) 30^(@) (iii) "cosec" (65^(@) + A) - sec(25^(@) - A)

Evaluate cos 40 ^(@) cosec 50 ^(@)+ sin 50 ^(@) sec 40 ^(@)

Evaluate: int (sec ^(2) x)/(cosec ^(2) x) dx

ICSE-COMPLEMENTARY ANGLES-EXERCISE
  1. Evaluate : (i) cosec 82^(@)-sec8^(@) (ii) sec 70^(@)sin 20^(@)+cos 20^...

    Text Solution

    |

  2. Evaluate: (cos22^(@))/(sin68^(@))

    Text Solution

    |

  3. Evaluate: (tan 47^(@))/(cot 43^(@))

    Text Solution

    |

  4. Evaluate: (sec 75^(@))/(cosec 15^(@))

    Text Solution

    |

  5. Evaluate: (cos 55^(@))/(sin 35^(@))+(cot 35^(@))/(tan 55^(@))

    Text Solution

    |

  6. Evaluate: sin^(2)40^(@)-cos^(2)50^(@)

    Text Solution

    |

  7. Evaluate: sec^(2)18^(@)-cosec^(2)72^(@)

    Text Solution

    |

  8. Evaluate: sin 15^(@)cos 15^(@)-cos 75^(@)sin75^(@)

    Text Solution

    |

  9. Evaluate: sin 42^(@)sin 48^(@)-cos 42^(@)cos 48^(@)

    Text Solution

    |

  10. Evaluate: sin(90^(@)-A)sinA-cos(90^(@)-A)cosA

    Text Solution

    |

  11. Evaluate: sin^(2)35^(@)-cos^(2)55^(@)

    Text Solution

    |

  12. Evaluate: (cot 54^(@))/(tan 36^(@))+(tan 20^(@))/(cot 70^(@))-2

    Text Solution

    |

  13. Evaluate: (2 tan 54^(@))/(cot 36^(@))-(cot80^(@))/(tan 10^(@))

    Text Solution

    |

  14. Evaluate: cos^(2)25^(@)-sin^(2)65^(@)-tan^(2)45^(@)

    Text Solution

    |

  15. Evaluate: ((sin 77^(@))/(cos 13^(@)))^(2)+((cos 77^(@))/(sin 13^(@))...

    Text Solution

    |

  16. Show that: tan 10^(@)tan 15^(@) tan 75^(@)tan 80^(@)=1

    Text Solution

    |

  17. Show that: sin 42^(@)sec 48^(@)+cos 42^(@)cosec 48^(@)=2

    Text Solution

    |

  18. Express the following in terms of angles between 0^(@) and 45^(@) si...

    Text Solution

    |

  19. Express the following in terms of angles between 0^(@) and 45^(@) co...

    Text Solution

    |

  20. Express the following in terms of angles between 0^(@) and 45^(@) co...

    Text Solution

    |

  21. For triangle ABC, show that "sin"(A+B)/2="cos"C/2

    Text Solution

    |